Softail Belt Drive

Having an open belt drive is one of those traits of a cool chopper. The mechanical nature of an open belt whippin’ in the breeze gives that element of nostalgia that is so popular in the V-twin dominated world we all love. We agree and tried to build on that cool factor with some modern day engineering. Our 2.4″ wide belt rides on Zinc plated 1045 steel pulleys. We used larger 14mm teeth and a forged outboard support to add as much strength as possible. Our 11 plate clutch design will handle up 120 ft-lbs of continuous use right out of the box. Our 1 piece jackshaft is exponentially stronger than stock, and when matched with our 1 piece clutch basket design, will yield years of reliable starting that we all come to expect these days. Not being happy with a product that just works great, we pulled out our design pencils and did our best to add the same level of aesthetic style to complement the strength of the mechanical design.

- Zinc plated steel pulleys

- One piece steel clutch basket

- One piece starter jackshaft

- 2.4″ Wide proprietary belt

- Forged aluminum outboard support (dog bone) and pulley covers

- Available with a show polished or black anodized finish

- Available as a 0″ or 1/2″ offset configuration
- Backed by a 2yr limited warranty

Softail Belt Drive Contents, PN SBD-0-NS-KS

Softail Belt Drive Contents, PN SBD-1/2-S

- 28 tooth zinc plated 1045 steel pulley up front and a 43T zinc plated 1045 steel pulley in the rear

- 1.58 pulley ratio yields a 7% increase in torque to the rear wheel on stock softails from 1994-2006

- One piece 66 tooth 1045 steel ring gear is mated to a 9 tooth one piece jackshaft that rides on an impregnated bushing

- 2.4″ Wide proprietary belt with 14mm teeth

- 11 plate clutch pack holds up to 120 ft-lbs of continuous use while the tight tolerance clutch baskets all but eliminates the ‘neutral clutch rattle ‘ most belt drives suffer from

- Forged 6061-T6 aluminum outboard support (dog bone) and pulley covers

- Motor plate and edge guard are machined from 6061-T6 billet plate stock

- Available with or without support, in either polished or black anodized finishes

- Available as a 0″ or 1/2″ offset configuration

As shown below left, is a used aftermarket clutch basket, made from Aluminum. As you can see, after time, vibration of the clutch pack inside the basket wears grooves in the flanks of teeth. Anyone who has wrenched for at least one riding season, has seen this phenomenon in the flesh. These wear marks when they start, cause clutch disengagement issues, shifting issues and trouble finding neutral. When they get to be as bad as this picture, you have to replace the entire basket at your expense. The wearing of the clutch plates into the basket, and the belt into the pulleys is why we designed our belt drive with 1045 steel pulleys. The same material we used on our secondary drive pulleys. Also pictured is a common aftermarket belt (on the bottom) with 8mm teeth, our 14mm tooth belt is just above it. The larger tooth size has more meat to it, and thus can hold more force per tooth. If a 14mm tooth belt size can drive the supercharger on a 500ci Top Alcohol Dragster motor, your bad ass Harley will be just fine.

Belt Drive Clutch Baskets, Aftermarket vs BAKER

Belt Tooth Comparison, BAKER vs Aftermarket

Softail Belt Assembly Cutaway

PN	Description	Fitment
SBD-0-NS*	No Offset, No Outboard Support	1990-06, Softail & Custom
SBD-0-S*	No Offset, Outboard Support	1990-06, Softail & Custom
SBD-1/2-NS*	1/2″ Offset, No Outboard Support	1990-06, Softail & Custom
SBD-1/2-S*	1/2″ Offset, Outboard Support	1990-06, Softail & Custom