Deathtrap Customs A/S

Twin Cam engines feature an oil pressure bypass passage within the cam support plate that is controlled by a spring-loaded plunger. The purpose of this passage is to allow excess oil pressure to be diverted back to the feed section of the oil system. Inconsistencies in 1999-2006 spring length and passage machining can cause the plunger to open prematurely and/or not fully close the passage, resulting in a loss of critical oil pressure and volume at lower RPMs. This shim assures proper spring pre-load, improving oil pressure and volume. Use with factory or aftermarket oil pumps and cam plates.


Fits 1999 thru 2005 Dyna, 1999 thru 2006 Touring and 2000 thru 2006 Softail
Article number Description Retail price Add to list
Zipper's Twin Cam oil bypass shim (pack of 5)

Recommended Retail Prices include 25% sales tax.

Prices exclude shipping, import duties and installation.

Prices are based on EUR to NOK interbank rates obtained daily. The interbank rate is the rate that banks trade currency to each other. These prices must be used as a guide.