Red Shift Cams® Performance Cams for 1991-up Sportster® and Buell XB® Engines
These engines have on-center tappets (tappet centerline in line with cam shaft centerline) Most of our 5-speed XL® Sportster® cams require some clearance work to swing clearly in the engine case. This can be accomplished with our cam clearance tool (#713-908) for a very professional result. 2000 and later models require more extensive clearancing of the case and pinion bearing race. Most models will also require rocker box clearancing for the rocker arms on the pushrod side at full lift. Must be used with adjustable pushrods.

643V2: High output cams for 79”-99” competition engines. 11:1 compression needed for best results. Will deliver 7000+ RPM power with high breathing heads. Lower TDC lifts to reduce chamber volume in heads for ease of installation. Requires cam lobe to case clearancing, quality lifters and high quality valve springs.

For Cams Purchased On New Cores: 2000 and later engines will require the purchase of 1991-1999 pinion drive gear.


Not legal for sale or use in California on any pollution controlled motor vehicle.
Not legal for sale or use on any EPA pollution controlled motor vehicle.

Weight 1 lbs

Country of Origin

Engine Type


Transmission Type

Customer reviews

Rated 5 out of 5 stars
1 review
4 stars 0 0 %
3 stars 0 0 %
2 stars 0 0 %
1 star 0 0 %

1 review for Red Shift Cams® 643V2

Add a review

Use one of the allowed file type: jpg,png.

    You may also like...