Rieju 250g Flywheel Weight Kit for MR300i (2026)

Product Information

Looking for smoother power delivery and improved control on your MR300i? This 250-gram flywheel weight kit from Rieju Power Parts is designed to increase engine inertia, helping the bike deliver power more progressively in demanding terrain.

Adding flywheel mass changes how quickly the engine responds to throttle input. With the additional 250 grams of rotating weight, the engine builds and releases power in a more controlled manner. This can make the bike easier to manage in tight singletrack, rocky climbs, and slow technical sections where traction and throttle precision matter most.

The added inertia also helps reduce sudden wheel spin and stalling tendencies during low-speed riding. Riders who spend time in enduro conditions—such as roots, rocks, steep hills, and slippery surfaces—often prefer the smoother power character that a flywheel weight provides.

As a genuine Rieju Power Parts upgrade, this flywheel kit is designed specifically for the MR300i engine platform. It integrates with the factory ignition and rotating assembly, allowing installation without permanent modification to the engine.

Whether you're racing technical enduro stages or navigating slow, demanding trail sections, this flywheel weight kit helps deliver a more controlled and manageable power feel from your MR300i.

Features & Benefits

• Adds 250 grams of flywheel weight
• Smoother throttle response
• Improved traction in technical terrain
• Helps reduce stalling in low-speed riding
• More controlled power delivery
• Designed for enduro riding conditions
• Direct-fit MR300i application

What’s Included

• (1) 250g Flywheel weight
• (1) Installation hardware set

Fitment

• Rieju MR Racing 300i (2026)
• Rieju MR Pro 300i (2026)

Specifications

• Weight Added: 250 grams (0.55 lb)
• Component Type: Flywheel weight kit
• Application: Engine power delivery tuning
• Installation: Direct-fit component
• Units: Kit