Kawasaki KFX 90/50 Dual A-Arm Conversion Kit w/Disc Brake Conversion (Includes full suspension) | Also Compatible: Can-Am, Grizzly, Kymco, E-TON, Arctic Cat, and 2001 Scrambler 110/90/50

Price range: $1,425.00 through $1,625.00

Kawasaki KFX90 Dual A-Arm Conversion

Full Suspension + Disc Brake + DIAMOND+ Shock Upgrade

Transform your KFX90 with a professional dual a-arm setup. Our conversion kit includes EVERYTHING NEEDED to overhaul your front end, eliminating the need to hunt for used components. This system is a complete, modern solution for riders looking to maximize stability and braking performance.

Universal Fitment Note:

This kit is also compatible with Can-Am, Kymco, E-TON, Arctic Cat, and the 2001 Scrambler (standard 50cc and 90cc frame configurations).

🚀 UPGRADE INCLUDED: DIAMOND+ 320mm SHOCKS

Now featuring our 4-Way Precision Adjustable Shocks (Length, Preload, Compression, and Rebound) for a fully tuned racing experience.

Technical Resources

Instructions Download:
📄 SFS Installation Guide

SKU: K90 SFS Category:
Estimated delivery dates: Oct 8, 2026 - Oct 15, 2026

Ultimate Dual A-Arm Conversion Kit

Complete Suspension & Disc Brake Performance System

ORDER NOTICE: This high-performance kit is made to order to ensure precision. Please allow a lead time of 2–5 business days for assembly before shipping.

Professional Suspension Overhaul

Eliminate the frustration of hunting for used components or mismatched parts. This conversion kit provides a complete, modern solution to transform your youth ATV into a wide-stance, high-performance machine. This is a 100% bolt-on kit designed for maximum durability and handling.

🚀 UPGRADE INCLUDED: DIAMOND+ 320mm SHOCKS

This kit now includes our premium DIAMOND+ 320mm Reservoir Shocks by default. These feature 4-Way Precision Tuning (Adjustable Length, Preload, Compression, and Rebound) for professional-grade damping and control.

Everything Needed Is Included:

  • ✅ DIAMOND+ 320mm Shocks (4-Way Adjustable)
  • ✅ Dual A-Arm Control Arms
  • ✅ Heavy Duty Ball Joints
  • ✅ New Spindles
  • ✅ New Hubs (4/110 Bolt Pattern)
  • ✅ Full Disc Brake Conversion
  • ✅ High-Performance Disc Brakes
  • ✅ New Performance Brake Lines
  • ✅ New Brake Lever Assembly
  • ✅ New Tie Rods
  • ✅ Suspension Mounting Brackets
  • ✅ Installation Hardware
  • ✅ Diamond J Customs Sticker Set
  • 🛠️ NO WELDING NECESSARY

6″ to 8″ TOTAL WIDTH INCREASE

Massively improve stability and cornering safety. For a balanced setup, we recommend purchasing our Rear Wheel Spacers to match the new front-end width.

Installation & Media

All sales subject to Diamond J Customs Terms of Sale — see our store policies.

Weight45 lbs
Dimensions12 × 12 × 18 in
A-Arm Bushings/Ball Joints

Pre-Assembled, Un-Assembled (for Custom Paint Jobs – $200 OFF)

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