Description

Ruizheng Racing +3.5mm Stroker Crankshaft for Yamaha Aerox 150 / NMAX (New) – 65.7mm Stroke, High-Performance Engine Upgrade

Product Description：

Upgrade Your Ride with the Ruizheng Racing NMAX Racing Crankshaft

If you’re looking to push the limits of your Yamaha NMAX or Aerox 150, the Ruizheng Racing +3.5mm NMAX Racing Crankshaft is the performance part you need. Engineered for serious riders and racing enthusiasts, this crankshaft delivers a total stroke of 65.7mm—adding a powerful +7mm stroke increase over OEM setups.

Built from high-strength forged steel and precision-balanced to reduce vibration, this stroker crankshaft is ideal for street performance, drag racing, or competitive circuit use. Designed to drop in with minimal modification, it works seamlessly with most big bore kits and aftermarket pistons, providing an immediate boost in torque, throttle response, and acceleration.

Key Features – Aerox 150 / NMAX Racing Crankshaft:

• Compatible Models: Yamaha Aerox 150 & Yamaha NMAX (new generation)

• Stroke Increase: +3.5mm

• Final Stroke Length: 65.7mm

• Total Gain: +7mm over OEM

• Material: Heat-treated, high-strength forged steel

• Precision Balanced: Reduced engine vibration at high RPMs

• Installation: Plug-and-play with most racing cylinder kits

• Brand Trust: Developed by Ruizheng Racing – performance-proven and track-tested

Why Choose a Stroker NMAX Racing Crankshaft?

The NMAX Racing Crankshaft increases the engine’s displacement by extending piston travel, which translates directly into:

• Higher torque output, especially in the mid-range

• Improved throttle response and launch acceleration

• Better performance on uphill climbs or racing starts

• Stronger engine braking

Unlike stock crankshafts, the Ruizheng Racing model is CNC-machined to exact tolerances and balanced for high-RPM stability. The result is a stronger, smoother, and more efficient power curve—ideal for both everyday tuners and competitive riders.

Precision Engineering by Ruizheng Racing

Every crankshaft is manufactured with CNC machining and heat treatment processes that enhance both strength and dimensional accuracy. We use forged steel to resist wear and distortion under high-load and high-heat environments typical of racing conditions. The crank pins are hardened and ground to ensure a tight tolerance and smooth operation, even under the stress of big bore setups.

Our brand is built on experience in the racing industry, and every part we produce is track-tested before it reaches your hands. Whether you’re tuning for daily performance or preparing for a race event, our crankshafts provide the reliability and power you need.

Custom Services Available-Aerox 150 / NMAX Racing Crankshaft

At Ruizheng Racing, every component is manufactured with deep industry expertise. Our crankshafts are:

• CNC precision-machined to ensure consistent shape and weight distribution

• Heat-treated and hardened to resist deformation under thermal and mechanical stress

• Surface-ground crank pins ensure smooth rotation and extended bearing life

• Track-tested under real-world racing conditions

This isn’t just a part—it’s the result of years of experience in high-performance scooter tuning.

Custom Branding & Packaging Services

Ruizheng Racing supports dealers, workshops, and independent brands with custom services tailored to your business:

• Laser Marking: We offer fiber laser engraving of your brand or logo on each crankshaft for white-label resale.

• OEM Packaging & Box Design: We provide custom box design and private label packaging to help you build a complete brand image and improve customer trust.

This makes us a preferred partner for businesses looking to expand in the performance motorcycle parts market.

🌐 Follow Ruizheng Racing Online

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Join the global performance community and see how riders around the world are using Ruizheng Racing parts to dominate the road and the track.