SP9: Street Performance 9-Plate Clutch


The 9-plate clutch is the competitively priced smaller brother of the KKC. A must have for all 1990-93 Big Twins, and 1994-06 Big Twins with a 9 tooth pinion. This clutch comes as BAKER Drivetrain’s standard for premium. It has a one piece basket, which is 23% larger than stock, and a hard anodized hub for increased strength and durability. We moved the friction material towards the outer diameter of the plate, which increases torque capacity and reduces heat build-up, all resulting in a longer clutch life.

– 9 Kevlar 2-sided clutch plates with large mean radius.

– Blue anodized clutch carrier and pressure plate.

– BAKER’S exclusive1-piece clutch basket and 66 tooth ring gear design.

– Larger torque capacity.

– Diaphragm-type pressure plate spring with ergonomic break-over feel during disengagement.

– Standard diaphragm spring installed and sent with a separate heavy duty rated spring.

– 2 Year limited warranty


Clutch Features

1-Piece Basket

Clutch Design

The fundamental design approach of the BAKER clutches is different than anything available from the factory or other aftermarket manufacturers. For strength reasons, we manufacture our clutch with a 1-piece ring gear/basket. First, a large donut shaped forging is turned on a CNC lathe to the shape of the finished basket. Next the internal splines for the friction plates are formed with a 6-foot long broach. Threads for attachment of the carrier are machined on a mill, then the ring gear teeth are hobbed on the same type of machine that makes our gears. It is not cheap to make the heart and soul of our clutches in this manner but the end result justifies the expense. The radial

Clutch Sprockets

strength gained by integrally putting the ring gear around the basket is analogous to the steel bands placed around a whiskey barrel.Without the steel bands, the barrel would explode and that would be alcohol abuse. Additionally, the ring gear is supported by the hoop of the basket and this guarantees the T.I.R. at the pitch line of the ring gear teeth (no egg shaped ring gear). We offer 35, 36, 37, and 38 tooth clutch sprockets with our clutches to dial in your overall gear ratio.



Starter Pinion SP1000

AC/DC Pinion

We only manufacture clutches with the 66 tooth ring gear. In 1994, Harley migrated from the 66 tooth ring to a 102 tooth design to achieve more starting torque. The flip side of that is the teeth sheer off especially on modified motors. If you have a 1994-2006 (except 06 Dyna); 102 tooth clutch basket you must purchase the AC/DC starter pinion separately, PN SP1000.



1990-2006 Big Twins (except 2006 Dyna)


PN Description
9P300-56-35 9-Plate Clutch w/35 Tooth Sprocket
9P300-56-36 9-Plate Clutch w/36 Tooth Sprocket
9P300-56-37 9-Plate Clutch w/37 Tooth Sprocket
9P300-56-38 9-Plate Clutch w/38 Tooth Sprocket


Recommended Upgrades

– Bully Derby Cover (1999-2006 5 Hole Derby Cover Models)

– 9 Tooth  Starter Pinion’

– Fine Tooth Chain Adjuster


Click on any of the images below to learn more

Bully Derby Cover

Starter Pinion SP1000

Fine Tooth Chain Adjuster and Shoe


Installation Instructions

9-Plate installation instructions with exploded views: Click Here


SP9- Street Performance Clutch


Clutch Internals



BAKER DRIVETRAIN| 9804 E. SAGINAW, HASLETT, MI, 48840 |1-877-640-2004| 517-339-3835 | FAX: 517-339-4590 @2012 BAKER INC