​DuraTPE® Series  Instructions

Instructions for Installation of Coil Spring Buffer “Bumper”

Fig 1, “D” for measuring points

Fig 2 (Click on image to view larger)

Fig. 3

Fig. 4

​Preparation  

1. For front-installation, make sure vehicle is on a hard (concrete) surface and apply the parking brake. Place blocks under rear wheels to prevent the vehicle from rolling.
2. Check your vehicle owner’s manual for the proper contact points then jack up each tire to its recommended servicing height. For a safe installation, position jack stands under the contact points for each wheel to properly distribute the weight.
3. Once each tire is properly elevated, the coil spring is relaxed at full extension. It is recommended that you remove the wheel for easier installation.
4. Using a damp cloth, clean away all debris on your coil spring before installing this product.  (specially in center 3-4 coils)
5. Measure the spring spacing between the coils to determine which product size (A+ .. F) should be selected (See Fig 1, “D” for measuring points), please measure center 2-3 spring distance, so to get average of the spacing distance.

​Choose the Right Size for Your Coil Spring (ref. to Fig 1 & 2)

• Tip1: choose product H1 = D (or close) (D: Vehicle Lifted Up)
• Tip2: if measurement H1 is larger than D, inserting into coil spring may be too difficult.
• Tip3: if measurement H1 is smaller than D, inserting is much easier but the buffer’s support is diminished.
• Idea case: H2 = D to provide max. support (but may be hard to insert into coil spring)
• Suggestion: Choose buffer size D > H2 but D <H1. If D closer to H2 there will be more lift and support.

Installation

​Installation Tip: 
If D very close to H2, you can cut the inside ring of the buffer to make installation easy (Fig 3).
If the buffer you choose is too long and overlap on the coil spring, please cut it to align top and bottom (Fig 4). 

1. After determining the product size, Completely Spray WD-40 onto both the inside/outside Buffer Grooves and Coil Spring (this lubrication will make the insertion smoother). 
2. Start from the widest spacing on your coil spring to begin fitting on the buffer, by seating one side product groove INTO coil spring first, then section by section push to fit the sliding into coil spring.
3. Continue using WD40 to keep the spacing between the coil spring and the buffer groove well lubricated.
4. Once both the spring and buffer are well seated, begin pushing/sliding/twisting the product to the tightest position to maximize the highest buffering support (keep lubricated with WD40 again if needed.)
5. For added support, zip ties the buffer to the coil spring. (This won’t be necessary if the fit is snug.)
6. Release the Jack (Stand), and return the tire to the ground. There should be around 0.5” ~ 1.5” lift, depend on spring type once it is bearing the car’s weight.
7. To maximize coil spring support, insert 2 buffers of matching size onto one coil spring (if spring length allows).
8. A test drive is suggested after installation. The ride should feel a little stiffer. Drive Safe. 
9. This product is primarily used to support the Coil Spring and prevent sagging. It provides a stiffer/stable suspension to absorb and dissipate the shock from potholes and bad roads while reducing stress on the suspension and tires thus enhancing the car’s operational life span.
10. If you require a higher ground clearance, ref. to Model: RBxx-xx-xx/ARBxx-xx-xx, Rubber Block Coil Spring Booster that may be inserted onto the top/bottom of the Coil Spring.