Moose Offroad 1211-1856 2013-2025 Beta Models Fitment 51T Black Aluminum Rear Sprocket — Premium Tempering

Moose Offroad — Restores Hard-Hitting Drive Power, Stop Letting Worn Sprocket Teeth Hook and Kill Your Acceleration

When you twist the throttle out of a loose turn and feel a sloppy, jumping lag in your drivetrain, your rear sprocket is likely hooked and worn down. Violent torque forces and gritty off-road mud quickly round off standard sprockets, stretching your chain prematurely and dragging down your rear-wheel power delivery. The Moose Offroad Rear Aluminum Sprocket eliminates this critical parasitic power loss, restoring immediate power transfer and giving you the instant rear-wheel bite needed to clear triple jumps and technical rock sections.

Engineered with Factory Quality materials, this high-performance sprocket is 100% machined from premium-grade 7075 T651 aluminum, receiving an extra mechanical tempering stage that minimizes distortion and provides a thicker structural cross-section than typical T6 sprockets. With zero stamping or grinding used during manufacturing, the optimal tooth thickness results in maximum contact between the chain links and sprocket teeth for flawless energy transfer and reduced friction wear.

Key Performance Benefits

• Restores Hard-Hitting Drive Power: Provides pristine mechanical tooth profiles to eliminate chain slop and optimize acceleration.
• Extra-Tempered 7075 T651 Aluminum: Offers unmatched structural integrity and resistance against distortion while staying ultra-lightweight.
• 100% Fully Machined: Avoids weak spots from stamping or grinding, ensuring precise concentricity to keep your 520 chain tracking straight.
• Optimal Tooth Thickness Profile: Maximizes surface area contact with the chain rollers to minimize drivetrain drag and extend component lifespan.
• Durable Black Anodized Finish: Provides a sleek, corrosion-resistant outer shield that protects against mud, track wash, and premature wear.

Moto-House MX Pro Tip:

Never mount a brand-new rear sprocket onto a worn, stretched drive chain. An old chain has a different pitch tolerance and will rapidly grind down your fresh sprocket teeth within just a few hours of riding. For maximum drivetrain lifespan, always replace your front sprocket, rear sprocket, and 520 chain as a complete matching set.

Fitment Application Data

FAQ Questions

Q) Is this aluminum rear sprocket stronger than an OEM Style stock sprocket?
A) This sprocket is crafted from premium 7075 T651 aluminum with an extra tempering process to match Factory Quality performance standards, minimizing distortion under extreme engine torque.

Q) What chain size does this Moose Offroad sprocket require for installation?
A) This 51-tooth aluminum rear drive sprocket is precision-machined specifically for a standard 520 size motorcycle drive chain.

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