PRO R/ TURBO R LOWER A-ARM AND KNUCKLE KIT

Description

The Lone Star Racing Lower A-Arm and Knuckle Kit is the ultimate front suspension upgrade for your Polaris PRO R or Turbo R. Built as a heavy-duty replacement for the stock lower A-arms and knuckles, this kit is engineered for riders who demand more from their machine - whether on the trail or deep in the desert. Constructed from heavy-duty 4130 chromoly and TIG welded for maximum strength, every detail of this kit has been purpose-built for performance and durability.

The knuckle redesign moves the tie rod location to improve steering geometry and dramatically reduce feedback, giving you more confident, precise control. Every mounting point is double shear for increased strength, and the kit retains factory hardware at chassis mounting points while using factory hubs and brakes - making installation straightforward. Baja tested and proven by Branden Sims across 1,300 grueling miles with zero play in the uniballs.

Key Features

• 4130 Chromoly Construction: Heavy-duty chromoly steel throughout for superior strength and durability under extreme off-road conditions.
• TIG Welded: Precision TIG welding ensures clean, strong joints that hold up mile after mile.
• 1" FK Uniball Lower Ballpoint: Vertical 1" FK uniball used as the lower ballpoint for strength and longevity - zero play after 1,300 Baja miles.
• 3/4" FK Uniball Shock Mount: Dedicated 3/4" FK uniball at the shock mount for reliable, consistent suspension performance.
• Double Shear Mounting Points: Every mounting point on the kit is double shear for dramatically increased strength over stock.
• Improved Steering Geometry: Relocated tie rod position on the knuckle reduces steering feedback and improves overall handling precision.
• Compatible with Factory Hardware and Components: Retains factory hardware at chassis mounting points and works with factory hubs and brakes for a clean, direct fitment.
• Universal Tie Rod Compatibility: Works with any tie rod kit using a 3/4" heim joint for the outer tie rod end. Mis-alignment spacers included.
• Baja Tested and Proven: Validated by Branden Sims over 1,300 miles of punishing desert racing terrain.
• Optional Shock Therapy Tie Rods: Shock Therapy tie rod kit available as an add-on for a complete front suspension solution.

Options & Which to Choose

• No Adjustable Upper Control Arms / No Shock Therapy Tie Rods: The base kit - includes the lower A-arms and knuckles with mis-alignment spacers. Best for riders who already have compatible upper control arms and a preferred tie rod setup.
• Add Adjustable Upper Control Arms: Pairs the lower A-arm and knuckle kit with Lone Star Racing's HD Adjustable Upper A-Arms, giving you full control over camber and caster. Ideal for serious builds and riders dialing in suspension geometry. Note: upper control arms are required for use with this kit.
• Include Shock Therapy Tie Rods: Adds the Shock Therapy tie rod kit to your order. Tie rod spacers are included regardless of this selection. Best for riders who want a single-source, fully matched front suspension package.
• Add Both Upper Control Arms and Shock Therapy Tie Rods: The complete front suspension upgrade - everything you need for a fully engineered, race-proven front end. Best for builds prioritizing maximum performance, geometry control, and reduced steering feedback.

What's Included

• LSR Lower A-Arms (pair)
• LSR Knuckles (pair)
• Mis-alignment spacers for tie rod double shear mount
• Tie rod spacers (included regardless of tie rod selection)
• Adjustable Upper Control Arms (if selected)
• Shock Therapy Tie Rod Kit (if selected)

Why You'll Love It

When stock suspension simply isn't enough for the way you ride, the Lone Star Racing Lower A-Arm and Knuckle Kit delivers a proven upgrade that doesn't cut corners. Every component is built to handle the demands of high-speed desert racing, rock crawling, and everything in between - trusted by competitive UTV pilots who put their gear through the absolute worst. The improved steering geometry means less fatigue and more confidence on the wheel, mile after mile. With double shear mounting points and FK uniballs throughout, this kit is engineered for long-term reliability rather than short-term gains. Whether you're prepping for an organized race or building the ultimate trail machine, this is the suspension foundation your Polaris PRO R or Turbo R deserves.

Product Specifications

FAQ