Jr. Sprint | Jack Shaft Housing – 2025 Design (JRX)

New style jack shaft housing for our updated D1 JRX junior sprint motor mount assembly. Now more user friendly.

• NEW jack shaft housing design – no more sawed-off Allen wrenches to set right-to-left location. A G8 hex head in the jack shaft plate pocket only requires a 1/2″ wrench on the bottom side of the plate.
• OPEN housing design makes bearing maintenance easier. Removing the extra material let us beef up the jack shaft mounting plate to reduce harmonics.
• Will pair with the JRX jack shaft mounting plate (old design).

Bearings sold separately. Choose to purchase with bearings and mounting hardware.