Treal Hobby Losi Hammer Reyâ„¢ U4 Aluminum Rear Axle Housing (Silver) Locker Spool Gear The Sport 3 platform uses

The Sport 3 platform uses a low-profile one-piece chassis with a fully sealed shaft-driven 4WD drivetrain

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and a lower center of gravity for smoother

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Upgrade the drivetrain in compatible high-power Traxxas models with this Hot Racing 50-tooth Mod 1 hardened-steel spur gear

Treal Hobby Losi Hammer Reyâ„¢ U4 Aluminum Rear Axle Housing (Silver) Locker Spool Gear The Sport 3 platform usesUpgrade the rear drivetrain of your Losi 1 10 Hammer Rey U4 with the Treal Hobby aluminum rear axle housing. Machined from high strength 7075 aluminum, the housing adds rigidity and precise fitment for demanding off road use while providing robust support for the rear axle assembly. Compatible with Losi Hammer Rey U4 7075 aluminum construction Precision CNC machined Silver finish Rear axle housing upgrade Check your model and existing part layout