Vforce 4R Valve boxHONDA 125 CR 125 R (JE01) - 1987 - 2000Ref : VF00005A / 1009777

V-Force 4R Reed Valve for Honda CR125R (manufacturer ref. V4R01D)

Designed by V-FORCE for 2-stroke motocross engines, the V-Force 4R modernises the intake for a livelier engine response. Its pre-curved carbon fibre reeds ensure better sealing and a more consistent response from the intake valve. The whole assembly is designed to improve airflow and gas management without altering the original cylinder architecture.

Highlights:

• Pre-curved carbon fibre reeds for optimised sealing.
• Wider box and combined reed tail increased by 10.5% to enhance airflow.
• Aerodynamic profile at the tip to increase air speed at the external intake ports.
• Extended reed stop for a gradual reduction of stress at the end of the stroke and increased service life.
• Front area of the central reed reduced by 15.6% for a sharper profile and better internal circulation.
• Overmoulded rubber on the tips of the reeds to limit wear at the seat contact.
• Collector, box, and deflector specifically designed for the V-Force 4R system.

Ideal for motocross riders looking to refine the intake and responsiveness of their CR125R JE01 (1998–2000). Replaces the original box and integrates into intake modifications without unverified promises: it optimises airflow and reed stability for a more consistent operation of the 2-stroke engine.