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Torquebox buy in Haslett
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Torquebox

Torquebox

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USA, Haslett
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Description

The torque output of an engine is proportional to the bore and stroke. Engines make torque and drivetrain components take torque. It is torque, not horsepower that destroys clutches, transmissions and drive belts. The torque capacity of a transmission is proportional to the gear width and the center distance between the two shafts. All stock Harley transmissions and aftermarket transmissions have a center distance of 2.5″. By increasing the center distance 20% to 3.0″, the Torquebox conservatively increases the torque capacity to 250 ft-lbs, continuous duty! In the early Torquebox design stages, the goal was set to design a continuous duty 250 ft-lb gearbox that visually looked like a 450 ft-lb gearbox on the outside. We achieved this by taking design cues from classic race-bred American superchargers and not having any excess material, anywhere. We achieved our goal. The Torquebox is available as a 5 or 6-speed, left or right side drive. All frame, starter, and clutch interfaces are identical to stock 1990-1999 models.

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