Shock Therapy - Polaris RZR XP 1000 / 4 XP 1000 / XP Turbo / 4 XP Turbo Dynamix Steering Rack

Back-Order Notice: Currently on back-order. Expected in stock by end of October. Orders will ship ASAP when inventory arrives.

Important Requirements: This rack cannot be used with stock tie rods. You must run an aftermarket set with 5/8 rod ends on each end. This is a race part with no warranty and will require periodic rebuilds.

Product Overview: After experiencing catastrophic failure of a stock rack during racing, this custom race rack was engineered to provide superior durability and performance. The design addresses common issues with aftermarket racks, including bump steer from incorrect tie rod pivot width and inadequate gear strength.

Key Features:

1. 7075 Aluminum construction—high-grade aluminum nearly as strong as carbon steel
2. Hard anodized plating for wear resistance and extended internal life
3. Dispersed grease passage lubrication with single grease fitting feeding 6 internal spots; requires only two pumps every 1000 race miles
4. Huge 1" x 1" square rack gear—twice as thick as stock at the weak point, 125% stronger material, prevents twisting and breakage
5. Pre-heat treated rack gear for perfect straightness with less than 1 thousandth inch run-out, allowing zero-tolerance fit in the body
6. Patent-pending gear tooth design with twice the base thickness of standard systems for superior strength
7. Heat-treated pinion gear made from 4140 Chromoly, hardened to 60 Rockwell—harder than a carbon steel drill bit
8. Precision pinion bearings with custom retainer plate and pre-load system; only high-tolerance $30 bearings used
9. Faster steering ratio—just over 1.5 turns lock-to-lock versus factory 2 turns, providing quicker response while maintaining comfortable feel
10. High-quality 5/8 Teflon-lined FK JMX10-T rod ends rated for a full racing season
11. Patent-pending "Taper Lock" jam nuts using machinist tool taper design to prevent loosening; also serve as steering stops
12. 4130 Chromoly clevises with high-tolerance 5/8 shoulder bolts; available in weld-on, 5/8 threaded, and Lone Star configurations

Clevis Options: Choose the clevis type that matches your tie rod system: weld-on for 1" .120 wall or 1.25" .095 wall tubing, 5/8 threaded for aftermarket tie rods or long-travel kits (Assault, Cognito, Long Travel Industries), or Lone Star threaded version.

Compatibility Note: This race rack does not fit 2017-2018 XPT models. See the separate 2017-2018 XPT Race Rack listing for that application.