V4R01D Reed Valve System Fits For Honda CR 125 1987-2002

V4R01D Reed Valve System for Honda

This V4R01D reed valve system optimizes intake airflow into the crankcase of two-stroke motorcycle engines, cross-referenced with part number V4R01D.

Overview

This V4R01D reed valve system is engineered to enhance throttle response and fuel delivery in two-stroke engines. By utilizing high-flow reed petals, this V4R01D reed valve system increases volumetric efficiency for a wider powerband. It is designed for racing enthusiasts and mechanics looking to maximize two-stroke engine performance and acceleration.

Built For Performance

• Equipped with high-performance carbon fiber reed petals for quick response.
• Aerodynamic cage design optimizes intake velocity and gas flow.
• Provides a tighter seal at lower pressure to prevent backflow into the carburetor.
• Durable composite frame material resists heat and fuel degradation.

Fits These Machines

• for Honda CR 125 (1987-2002)

On-The-Job Use

• Replacing worn or chipped stock reed petals to restore lost compression.
• Improving low-end torque and high-RPM power on two-stroke dirt bikes.
• Tuning fuel induction for smoother off-road throttle transitions.

Specs At A Glance

Good To Know

Q: How do I know if the reed valves are worn out? A: Look for cracked, chipped, or frayed petal edges, or hold the cage up to the light to see if there is a gap. Worn reeds can cause hard starting, rich idling, and lazy throttle response.

Q: Do I need to re-jet the carburetor after installing this system? A: Minor carburetor jetting adjustments may be beneficial to take full advantage of the improved airflow characteristics of the new valve system.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.