WP35 Fork Flow Kit - KTM Group 50/65cc 2020-2025 (Including Air to spring conversion) KroozR ^Sale

Australian Manufactured

Big Piston Flow Kit – KTM 50 / 65 Forks 
Say goodbye to harsh, sticky air fork action on your mini racer!

Our Big Piston Flow Kit transforms the WP35 air fork (2020-2025 KTM / Husky / GasGas 50 & 65cc) into a true dual spring system with real valving—just like the big bikes.

✅ Eliminates the unpredictable air fork "stiction"
✅ Converts to full spring fork for plush feel and better stability
✅ Includes flow piston, top-out springs & conversion hardware
✅ Dramatically improves turn-in, small bump compliance, and rider comfort
✅ Ideal upgrade for serious racing and a smooth action for these light weight riders

Kit fits:

KTM / Husqvarna / GasGas 50/65cc bikes  2020-2025

WILL NOT fit 2026 50cc and 65cc models

Installation Tool is Required - WP35 Socket Install Tool 

A great tunable cost effective solution to transform the OEM WP35 system into a plush action allowing less rider fatigue, improved turn in and more stabilty accross bumpy terrain.  This kit includes all valving and 'air to spring' conversion parts. 

A fork spring to match the OEM spring is required if you wish to convert the system to a a true dual spring fork, and is our best setup recomendation to do so. (these bikes have one spring in them in OEM trim)  A much smoother less sticky action is produced easily with a conventional dual spring setup.

Full Kit includes:

• top out springs
• WP35 Flow Piston assembly 
• Spring convserion parts 
• Step by step detailed install instruction  
  

Spring Recomendation Please note- 50cc and 65cc bikes come with already a single fork spring as OEM to balance with the Oem Air system.  We recommend replacing the Air system with our spring conversion parts included in this kit and then balanced with a single spring ( to replace the air ).  This will convert fork to dual spring and improve bump action and feeling.

Match with a single spring or a pair of new springs to tuners / suspension builder recommendation. 

We can easily assist with spring recommendation via email or phone

Spring Recommendation / guide :  **Some springs not available as a pair

50cc Bikes - 

65cc Bikes -