Link to Full Set (Front and Rear):
This listing includes our DIAMOND+ 400x9mm (1) Rear Shock PLUS (1) upgraded 10mm coil for an even stiffer option! Shocks are fully adjustable in length, rebound, and preload with functional nitrogen reservoirs.
We also now offer upgraded Delrin Bushings on our eBay Store!
Initially developed for our ATV shock conversion kits in 2020, we set out to develop the best adjustable shock under $1,000.
After years of feedback and improvements, we are happy to provide a shock that can be used on ATVs, Motorcycles, and other off-road vehicles to upgrade stock suspension performance.
Compatible with our Adult ATV Shock Conversion Kits. (Same size as 400ex stock shocks)
These shocks are adjustable in length, spring preload, and rebound:
Length can be adjusted 1/2" longer by unscrewing the lower shock eye, and threading nut to desired length.
Preload can be adjusted using included tool to tighten the nut/collar above spring coils.
Rebound can be adjusted by twisting the knob near the lower shock eye 0-24 clicks.
Spring Coil Diameter Recommendation:
8mm - Youth Riders (available in eBay Store)
9mm - Adults Riders (In this Listing)
10mm - 700cc+ Vehicles
Spring Rates:
400mm x 8mm Coils: 96 lbs/in
400mm x 9mm Coils: 146 lbs/in
400mm x 10mm Coils: 212 lbs/in
Diamond J Customs will replace any shock components that fail within three months of purchase at no charge. This warranty covers one replacement per purchase.
Shock Bushing Upgrade:
For customers seeking enhanced performance and durability, we offer Delrin shock bushings as an upgrade. These bushings are available for purchase at an additional cost.
*Please note: The warranty does not cover normal wear and tear, or damage caused by improper installation or misuse. If shocks are installed at an improper angle, it may increase bushing wear rate.