Bump stop material. 000 in. Precision Chassis Strut Bumper - K201272 Metro Supersoft Frame Bump Stops XB 19-R. The precision fit of the components, our unique piston design, the proven valving configuration and our advanced seal technology combine to May 28, 2024 · Regardless, Ford Performance Parts bump stops are just what you need. Buyer's Guide This type of material does offer some minimal damping affect as the material is compressed and then released Find Frame Bump Stops Rubber Bushing Material and get Free Shipping on Orders Over $109 at Summit Racing! $20 Off $250 / $40 Off $500 / $80 Off $1,000 - Use Promo Code: REWARDS Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Mar 18, 2024 · Find Frame Bump Stops Polyurethane Bushing Material, Front Bump Stop Position and get Free Shipping on Orders Over $109 at Summit Racing! Bump Stops, Polyurethane Oct 29, 2023 · The stock bump stops on the 3rd Gen Tacoma are short and made out of a hard material. Key Features: Made from high-quality polyurethane ; These bump stops come with a 2-year Energy Suspension limited warranty ; Direct-fit and universal bump stops (may require modification) are available; Made in the USA ; Our Bump stops are made in a few different designs, so they mount in different places. This part is a progressive rate spring, which is created to have a soft contact, followed by an increase in stiffness to avoid hard contact. Jul 10, 2021 · In this article, we’ll be covering the different types of bump stops, the materials used, the different applications for aftermarket bump stops, and some of the best brands to look at when upgrading. ”. Its price tag can vary depending on the manufacturer’s brand, the material used in the bump stop, and the number of parts in each set. This results in a harsh and jarring feeling when your suspension bottoms out and hits them. 00. Bump Stops. Dispatches or Collect 1-3 business days. Price $655. 500 in. The material HAS TO BE HARDER to stop the axle from hitting hard parts. In Stock (more than 10 available) The price of a replacement shock bump stop mostly depends on its material. KRS-20AB424-007. Shock Material Breakdown; Shock Tuning Chart; Shipping and Returns; 2. 75”. RubberShox® prevents coil sagging with a reinforced May 28, 2024 · Free Shipping - Metro Moulded Bump Stops with qualifying orders of $109. +. A bumper shock absorber is a device that absorbs minor collisions with the bumper of your vehicle. Report an issue with this product or seller. 25 in. A replacement Chevrolet Silverado 1500 bump stop can cost anywhere between $15 and $55. Sat 9:00AM - 3:00PM CST. Hood Bump Stops, Rubber, Black, Dodge, Plymouth, Each. › See more product details. 0" Compact Bump Stop Manufactured from 4130 Chromoly Material; Bump Stops NOT Included; $19. Get the best deals on an aftermarket 1998 GMC C6500 Topkick Bump Stop. Location : Front Notes : Front Jounce Bumper Product Fit : Direct Fit Warranty : 1 year or 12,000-mile Crown limited warranty Prop 65 Warning : URO Parts Bump Stop - MND2150AB. Rubber bump stops provide a cushioning effect during suspension compression, limiting the travel of the suspension components and preventing metal-to-metal contact. PaulJ. $10. Bump Stop 2. The more we know how to tune these ultra-simple and durable components Apr 13, 2011 · One would think that a bumpstop could just be made out of a simple block of this material and work well, and this is usually the case with a short one, say 2 inches or less. Your car was designed to be “bump stop active. Supersession (s) : 90878JM00A. *Free shipping over $99 excludes heavy, bulky items & regional areas. Progressive Bump Stops simply pop-in to the existing factory locations. This travel limitation can allow for larger tire fitment without rubbing at full compression or in certain cases allow for coilover adjustment past the maximum Car park bump stops, commonly known as wheel stoppers or parking blocks, are parking lot safety devices used to avoid collisions between parked vehicles. are guaranteed to last longer and operate more efficiently than original rubber stops. $13. Call now 1-877-870-8556 Chat Now. Product Details. $17. JK: 0. Large spring travel and high end forces for absorption of large amounts of energy. Applications of Rubber Bump stops include: Automotive Suspension, Industrial Machinery Bump Stops, Shock Absorbers etc. Our Price. Order today! Manufactured, Serviced and Supported in the USA. $43. 2. 01:38 All of these properties can be modified in order to achieve a different stiffness of a bump stop. Drop Ship. $46. Shop for the best Bump Stop for your vehicle, and you can place your order online and pick up for free at your local O'Reilly Auto Parts. Bump Stop Set Rear; 4 Wheel Drive. Hitting stock bump stops feels more of a hard stop opposed to a gradual stop. Some are placed in line with the piston rods of your shocks, adding an extra level of absorption when the shock reaches its limit. 2544 American Drive. I used those because they were labeled as being for 16" or larger wheels, and I have 17" wheels on my car. 7/8” tall x 1 7/8” long x 1 3/8” wide. Reviews. Bump Stop Attachment: 3/8 in. Installation. Estimated Ship Date: Apr 3, 2024 if ordered today. 9104R Rear Bump Stops : Color No Color : Material Plastic : Suggested Users unisex-adult : Number of Items 1 : Manufacturer Energy Suspension : Part Number 8. Parabolic spring. But, you can soften the blow with a high-quality It features a hard structure that can handle damage and withstand stress from both on and off-road drives. Flat head bump stop. Fits 2wd & 4wd applications. Expect to pay more for professional installation. com FREE DELIVERY possible on eligible purchases 2 days ago · Here is an additional bump stop option. Free Shipping. This product is easy to install and should take about 1 hour. There's no other way. Feb 1, 2018 · Insights into bump-stop tuning. Sudden stops are unavoidable, but they don’t have to be jarring. Quantity: Sold as a pair. Apr 9, 2021 · Buy DuraSHOCK 5. Bump Stop characteristics measured in the lab are Replacement. 40(a, b, c and d)) becomes active and either suddenly or progressively provides additional resistance to the full deflection of the wheel and axle relative to the body Bump stop. Improves Suspension . 00) Up to 10% off for Military & First Responders! See Details. are guaranteed to last longer and operate more efficiently than original Bump stop kits protect your off-road truck or SUV’s components from the jarring impact of metal-on-metal. Jumpstart Your Next Project! Find 1967 CHEVROLET CAMARO Frame Bump Stops Rubber Bushing Material and get Free Shipping on Orders Over $109 at Summit Racing! KYB SB5192 Bump Stop Protection Kit. VAT) Units. This can also cause loss of control and on rare occasions, damage to your body, frame, or other suspension components. As your suspension travels, it absorbs the impacts of bumpy trails, but as speed or the size of these bumps increases, your suspension alone may not be up to the task. bump stops and end stops for a smoother and safer ride. Energy Suspension offers polyurethane bump stops for hundreds of applications. Elastomer Bump Stop material properties are loading rate and temperature dependent. King Hydraulic Bump Stops are priced a bit higher than most other brands but making a bump stop that withstands high forces repeatedly for the duration of a long desert race requires high quality materials machined to very tight tolerances. One more time. (inc. SB5192. The Apr 20, 2023 · Bump Stops 101. $585. Application. A Look At Bump Stop Tech. Part Number: MMP-XB19-R. By Andre Simon. Like all shock absorbers, a bumper shock absorber will eventually wear out if it no longer 2 days ago · Again, better material does not change the laws of physics. Part Number: TGI-310808. Rubber bump stops for shocks can cost anywhere between $10 and $40, while polyurethane bump stops cost anywhere between $10 and $90. Everything Bronco Aftermarket. A suspension bump stop takes the brunt of the big hits so your Metro Moulded Hood and Fender Side Bumpers SB 130. 3 9/16 in. REAR SUSPENSION BUMPER. 0. Summit Racing Part Number: DYS-KU71089BK. SKU. Button head bump stop 1” tall x 2” dia. Warranty Sep 24, 2013 · Energy Suspension 8. Think of bump stops as pieces of rubber or similarly soft material that act as progressive-rate springs. Feb 1, 2017 · Size: BumpStep XL w/ Standard Plated Hardware. May 20, 2023 · DuraSHOCK Modular Universal Rubber Bump Stops for Truck and RV Suspension Enhancement, UB3F Sub-Module Pair 4000 lbs Hardness 45HA, Require UB1/UB1A/UB1F Top Module 1 offer from $90. A liftgate is a hatch — normally mechanized — on the backend of your Nissan. Made In the USA! Includes: 1 BumpStep XL w/ Standard Plated Hardware. Wish List. More Info. It also offers a brand-new, Preload Adjustable Bumpstop System that gives racers more RS Stock No. Available to fit ⅝” or ½” shock shafts (16mm/14mm) Kit includes case and 4 of each shim (¹/₁₆”, ⅛”, ¼”, ⅜”) Made of High Impact material Apr 10, 2023 · Extend the Life of Your Suspension with Bump Stops: Bump stops play a critical role in preventing damage to your suspension system. Vehicle Info Required to Guarantee Fit. 0. These bushings are essential to suspension Nov 16, 2021 · The price of aftermarket bump stop replacements can range from $7 to $780 for the part itself. Free 60-Day Returns. Bump Stop - Yellow, Foam, Direct Fit, Sold individually. Most cars these days are 15 to 20mm from the bump stops before you and your Wendy’s large fries and double bacon cheeseburger get inside. As they compress, air resistance through the ports dissipates energy, enhancing impact absorption and vehicle stability. 99 You Save 17% ($9. Measures: 24" wide by 4 5/8" Long. 47 in. The mirco-cellular foam material is more compliant and will help to soften bottom-outs with the suspension reaches full c. 00Nitrogen Bump Stops One type of bump stop that May 6, 2024 · Find CHEVROLET COLORADO Frame Bump Stops Rubber Bushing Material and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Detailed Description. 31 In stock - FREE next working day delivery available. -. Page 1 of 1 | Showing 1 - 9 of 9 results. By absorbing and dissipating the force of impacts or compressions, they protect components like shocks, struts, or springs from bottoming out or reaching their limit of travel. That’s why today’s innovators are using Cellasto ® bump stops for a wide range of applications, from automotive interiors and power tools to suspension systems, elevators and cranes. Summit Racing Part Number: SDK-C5ZZ-16763-B. Bump stops are sold individually or in a set of two units. Apr 7, 2011 · Phantom Bump Stops offers a variety of different bumpstops and accessories, as well as spring rubbers. Line: NOL. In order to improve the ride and increase control, a different type of bump stop is required. Bump stops are car parts that limit the suspension travel. This is especially true when making production runs, and you wish to quickly Trail-Gear Hydraulic Smooth Body Bump Stops 310808. This more-compliant material opens additional suspension capability (grip), while softening the transition into striking the bump stop. Low profile competition style bump stop. Estimated Ship Date: Jun 11, 2024 (if ordered today) Free Shipping. Shop for the best Bump Stop for your 2000 GMC Sierra 1500, and you can place your order online and pick up for free at your local O'Reilly Auto Parts. Grand Cherokee Sales Techs: Connect Now M-F 8:30A-11P, Sat-Sun 8:30A-9P. Find Hood Bump Stops and get Free Shipping on Orders Over $109 at Summit Racing! 2 days ago · Again, better material does not change the laws of physics. Advantage: They’re free!Disadvantage: Poor ride quality and loss of controlCost: Replacement bump stops run somewhere between $17. Hyper-Flex (TM) performance polyurethane bump stops for control arms, traction bars, leaf springs, etc. 13 available from Europe for delivery within 1 working day (s). Color: Black. If there is one component that has contributed the most benefit for the lowest cost in the design and development of suspension systems over the past 20 years, it is the humble microcellular polyurethane (PU) bump stop or ‘spring aid’. UPC: 814423019965. Part #: REV218. locking nut. Lowering kits are all fun and games until somebody or something gets hurt. And, if you’ve ever bottomed out, you know the damage that can do to your ride as well as to your back. Special Order. 49. Energy Suspension performance bump stops help cushion a collapsing suspension, preventing bottoming-out and expensive vehicle damage. Our EVS Foam stops use a proprietary Microcellular Foam material that provides a true progressive spring rate. Trail Gear Hydraulic Bump Stops 311097. Find Frame Bump Stops Polyurethane Bushing Material and get Free Shipping on Orders Over $109 at Summit Racing! The industry grade rubber materials available at Butser Rubber provide progressive stiffness as the material is compressed. : 126-5966. UPC: 00842110129376. Order the pair recommended for your vehicle. If you plan on replacing your vehicle’s rubber bump stops with polyurethane ones, go for Energy Suspension bump stops. Brand: RS PRO. Part Number: CR52109795AC. Mon-Fri 8:00AM - 6:00PM CST. Part Number: TGI-311097. These bushings are essential to suspension performance. Qty. Find Body Component Bump Stops Rubber Bump Stop Material and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App. (With stock springs) If you upgrade your springs it will be slightly different. 52109795AC Shock Bump Stop, Front. King bump stops are made from the same quality materials and precision machined components that are used in our performance racing shocks. Polyurethane bump stops are more durable and can withstand more abuse, but they also provide a stiffer ride. Energy Suspension (R) performance bump stops help cushion a collapsing suspension, preventing bottoming-out and expensive vehicle damage. This price range depends on the brand, series, and quantity of specific bump stops. Check Vehicle Fit. The Bump Stops features a strong poly foam material, while the hardware and brackets feature anodizing and powder-coating for added corrosion protection. No it’s not made exactly for our trucks, but it is proven in the Toyota community and happens to work perfectly on Rangers. Bump stop element with a smooth characteristic curve. Body Component Bump Stops, Rubber, Black, Chevy, Kit. Made in USA. Bump Stop, Control Arm Bumper, Black, Rubber, Chevrolet, Pontiac, Each. Frankly, I would replace the hard rubber (or hard urethane) bump stops with a material that compresses progressively – specifically, microcellular polyurethane, also known as Cellasto®. Notes : Coil Spring Dampener Donut; H-2. 2 per set. Sold separately in packs of 4 or in a kit. Feb 7, 2024 · On the other hand, 3D printed bump stops boast a precision-engineered multi-layered structure made from industrial-grade thermoplastic polyurethane. The bump stop can also be placed on the frame located above the axle to keep the metal of the frame from hitting other metal Apr 15, 2024 · Find Hydraulic Bump Stops Steel Hydraulic Bump Stop Material and get Free Shipping on Orders Over $109 at Summit Racing! Bump Stop, M 9100 Series, Hydraulic Feb 6, 2020 · Proper bump stop length and/or bump stop strike pad height is crucial for preventing damage to axle housing tubes, suspension components, shock absorbers, and fenders. Compare. 75" SpeedBump Bump Stop Strike Pad Kit – Rear Lower $33. Location : Front Or Rear, Rear, Front Color Finish : Yellow Material : Foam Attachment Type : Pressed Diameter : 2 in. Apr 1, 2009 · A Look At Bump Stop Tech. Bennett January 16, 2019, 10:00pm 1. May 12, 2024 · That’s where the aptly named bump stop comes into play. 1” tall x 2 15/16” dia. Find Frame Bump Stops Rear Bump Stop Position and get Free Shipping on Orders Over $109 at Summit Racing! $20 Off $250 / $40 Off $500 / $80 Off $1,000 - Use Promo Code: REWARDS Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Bump Stops Explained. This Front Bump stop Kit for 2022-2023 Toyota Tundra and 2023 Toyota Sequoia provides improved performance over the OE bump stops with an easy bolt-on installation. See More Specifications | Check the Fit. Bump Stop Material: Rubber. Part Number: BSN-F4BE5G722M0. 5” Lift Includes: Progressive Front “Foam” Bump Stops – pair Bump stops are commonly made from a polymer based material and are available in all sorts of different materials, lengths and geometries. ; Dia. They come in all shapes and sizes. Color Finish : Red Material : Polyurethane. May 24, 2021 · The Definition of Bump Stop. These traffic calming equipment increase functionalities of parking spaces, parking garages, parking lots, and residential parking areas to discourage fatalities. Jun 23, 2023 · Rubber bump stops are the most common and widely used type. Nolathane Bump Stop Kit - REV218. You Save 2% off RRP. This material offers superior durability compared to traditional rubber, ensuring that the bump stops can withstand harsh conditions and maintain their performance over time, giving you peace of RESTOPARTS® Manufactured Rubber Bumper and Stopper Kits RBK067. 2 Bump Stops per set. Jounce Bumper Front Lower; With Nut; Square. A bumper shock absorber is usually attached to the bumper and the frame to dampen the impact from low speed accidents. Estimated Ship Date: Monday 6/3/2024. Designed specifically for mounting King 2. The hold-down clamps and screws provided by Inventables for the X-Carve work quite well for most applications but having a pair or two of “bump stops” can speed up the process of clamping down material to the CNC machine waste board and make life a Of course, this creates poor ride quality and loss of control. Get the best deals on an aftermarket 2016 Chevrolet Silverado 1500 Bump Stop. Fits standard 2" receiver hitch. Hydraulic Bump Stop Brackets Included: Crown®. Cellasto. Trail-Gear Performance 2. Buy a complete kit to get yourself started or add to your existing kit with a four pack of the extra thicknesses you may need. Other factors that can affect pricing include the part’s brand, height, finish, and your vehicle’s specifications. $36. However, other factors such as bump stop type and material may also affect the pricing. Bump stop element for absorption of large amounts of energy with high end forces. Jan 16, 2019 · The hold-down clamps and screws provided by Inventables for the X-Carve work quite well for most applications but having a pair or two of “bump stops” can speed up the process of clamping down material to the CNC machine waste board and make life a little easier. When used with shocks, the bump stop prevents travel before bottoming out, preventing wear to the shock. A: We built the first truly dynamic bump stop. 5" Smooth Body Pin Top Bump Stops - 2" Stroke. Bump stops are designed to improve your ride while protecting your vehicle’s suspension. Almost universally, they’re used as an aid for the main springs and in play during most handling maneuvers. 250 in. Part Number: RJ28860001. Hyper-Flex performance polyurethane bump stops for control arms, traction bars, leaf springs, etc. Holds up to 300 lbs max. Part Number: OPG-RBK067. Mar 11, 2022 · H3 bump stops budle comes with 2 pack H3 front control arm bumpers and 2 pack rear bump stops for 2006-2010 H3, 2009-2010 H3T ; Direct replacement and made from premium polyurethane foam, huge improvement once installed ; The 4th and 5th diagram shows dimensions you may need before ordering Daystar EVS Foam Bump Stops are the next generation in bump stop technology. 3 Year Limited Warranty. Our 3D-printed bump stop uses tailored internal air passages to achieve efficient compression damping. 10. Explore Jobs. Bump Stop, 9100 Series, Hydraulic, 2 in. Bump stops are often overlooked at the lower levels of motorsport, but even without a high downforce setup, knowing how and why they’re important can make a big difference to your vehicle’s handling and lap times. Stop railstrip. Fits: JT Gladiator (pickup) 0-4. Appleton, WI 54914. So you are in for a harder 'BUMP' when the axle contacts the stop. Shape: Arrow Check Vehicle Fit. We have very limited bumps stop options for our rear ends. 9104R : Included Components Energy Suspension 8. Typically made of a rubber material. Material: Rubber. Rubber bump stops are softer and provide a smoother ride, but they are also less durable and may need to be replaced more frequently. Travel, Steel, Electroplated Nickel Finish, 11. Apr 27, 2023 · Material Bump stops are typically made from rubber or polyurethane. Part No. Hydraulic Bump Stop Collapsed Length: 5. Due to the material being too firm. Bilstein M 9100 Series Bump Stops. Rather than being strictly a limiter, EVS Foam is designed to be an active part of the suspension with a rate that increases as the material compresses. $267. They’re usually found on the damper’s shaft, but they could be placed elsewhere in a suspension setup. -16 stud. . Shape: Round. Product Fit : Direct Fit Recommended Use : OE Jan 16, 2019 · DIY Bump Stops for X-Carve (FREE PLANS) Projects. Bump Stop Color: 1 - 24 of 103 results for Strut Bump Stop Compare Refine. 2 Reviews. Shop for the best Bump Stop for your 2001 Chevrolet Suburban 1500, and you can place your order online and pick up for free at your local O'Reilly Auto Parts. On Sale. Limited Lifetime Warranty. Warranty Detailed Description. All Material: Urethane. 1995-2004 Tacoma Rear Performance Bump Stop Kit - 4" Stroke. This Front Bumpstop Kit for 2022 Toyota Tundra provides improved performance over the OE bumpstops with an easy bolt-on installation. News. Bushing Material: Polyurethane . View all Anti Vibration Mounts. Bump Stop Set; Energy Suspension performance bump stops help cushion a collapsing suspension, preventing bottoming-out and expensive vehicle damage. Estimated Ship Date: Jun 11, 2024 if ordered today. Can affect the functionality of your liftgate when damaged. Add to Cart. FREE Shipping on orders over $119 Market Price $52. 9104R Rear Bump Stops : Size No Size DuraTPE® Durable Thermoplastic Rubber – Environmentally friendly and Resistant to coil abrasion, oil, salt, gravel & UV radiation. Helps to prevent your liftgate from making contact with your vehicle's frame. Lifetime Replacement Guarantee. The normal function of a bump stop in an OEM or road car application is really just to limit the suspension Liftgate Bump Stop. 714-530-8701. Part Number: 90878-JM00A. Extended Length. 00 Rubbershox Modular Universal Rubber Front Rear Bump Stop for Truck and RV Suspension Enhancement System, Sub& End Module Require Top Module (Top MB Sprinter) Product Line: Scott Drake Hood Bump Stops. 2 1/2” tall x 4 1/2” long x 2 1/2” wide. Write the First Review. Add To Cart. Product Details The ICON Vehicle Dynamics 1/2” Coilover Bump Stop Spacer Kit limits compression travel of any ICON Vehicle Dynamics coilover kit with 7/8" diameter shafts that includes integrated foam shaft bump stops by . Shop Frame Bump Stops at Summit Racing. 5" Universal Rubber Front Rear Bump Stop for Truck and RV Suspension Enhancement Suspension Enhancement System | 9000 Ibs Capacity at 50% Compression (5. 99. 10. 0010. Others like Prothane Bump Stops (aka Axle Snubbers) mount between your frame and axle, absorbing impact before the axle gets a Find the Perfect Ford Bronco Bump Stops for Ultimate Suspension Control. This customizable approach allows for precise performance tuning, offering May 28, 2020 · The inner part that actually does the bump stopping was angled slightly differently between the two. Find Parts ForYour Vehicle. Made of high-quality materials and designed for a variety of applications, they are sure to be a great fit and provide improved stability, ride comfort, and the cushion necessary to protect your vehicle from suspension and chassis damage. Progressive bump stop design to help bottom out. They are typically made of durable rubber or elastomer materials. 99 $36. They're available in a variety of shapes, heights, and sizes, with a single stud mount and 3/8 in. Verify parts fit and get product recommendations. Low profile rectangular bump stop. 5" Shock Top Bump Stops 4" Travel - Compression Bypass & Adjustable Reservoir. 5” x 4”, UB123): Automotive - Amazon. Feb 2, 2021 · Specification: Item Type: Bump Stop Material: Rubber OEM: 15712438, 523-049 Fitment: Fit for Chevrolet SILVERADO 1500 1999-2006 Fit for Chevrolet SILVERADO 1500 CLASSIC 2007 Fit for GMC SIERRA 1500 1999-2006 Fit for GMC SIERRA 1500 CLASSIC 2007 Package List: 2 x Rubber Bumper Note: Please double check the part number of your item, matching Universal Fit. See All Products Details. Not Yet Reviewed. DuraTPE® Buffer enhances driving stability while extending the life of coil springs and the suspension system. Shop for the best Bump Stop for your 2003 Dodge Ram 2500, and you can place your order online and pick up for free at your local O'Reilly Auto Parts. Hydraulic Bump Stop Extended Length: 8. 50 – $30. Bump element with medium spring travel for absorption of medium energies. 52. The micro-cellular foam material is more compliant and will help to soften bottom-outs when the suspension reaches full compression. RAETECH's Bump Stop Load Cells are designed to accurately and reliably measure Bump Stop Loads on vehicles that incorporate the bump stop on the shock absorber. In most setups, bump stops float on the The bump stop limits suspension travel, and it prevents other components from making contact with damaging items. 99 Sort By Most Viewed Best Sellers New Price: low to high Price: high to low Product Name Set Ascending Direction Auto Metal Direct Control Arm Bumpers SS-18. Energy Suspension Bump Stops. Enhanced Stability . Show More. Suspension bump and body roll control depends upon the stiffness of both the springs and anti-roll bar over the normal operating conditions, but if the suspension deflection approaches maximum bump or roll the bump stop (Fig. kx kl ya bf dd im ch gi ko ze