Vforce 4RI system Valve boxRef : VF00019A / 1009785

V-FORCE Reed Valve V-Force 4RI - Ref. V4R83A-I

Specifically designed for 2-stroke engines in the motocross range, the V-Force 4Ri is aimed at demanding riders and tuners who want to optimize the intake of their Suzuki RM85. This reed valve incorporates Moto Tassinari's advancements: improved airflow, reworked reeds, and components tailored to the VForce4R system for more precise engine response and a more uniform filling.

• Carbon fiber reeds, pre-curved for better sealing.
• Widened box and combined reed tail increased by 10.5% to enhance airflow.
• Aerodynamic profile at the ends and reduced centralized frontal area to smooth the intake flow.
• Extended stop for gradual wear of the reed.
• Overmolded rubber at the ends of the reeds to enhance durability.
• Collector, box, and air deflector specifically designed for the VForce4R system; optimized venturi to improve the mixture passage.

Compatible with Suzuki RM85 (2021–2022 models listed), this box fits into the motocross universe and is aimed at riders looking to enhance the reliability and fine-tune the intake range of their 85 cc. V-FORCE remains a well-known reference among 2-stroke tuners.