Self tapping pivot shaft, swingarm. +.025" OS - 58-84 4-sp Big Twin (excl. Softail) (NU) 505110 sealed and maintenance free (just

sealed and maintenance free (just keep them charged)

The absolute pull-back champion

- Bolt-on installation - Hidden internal crankcase breathers - CNC machined billet aluminum construction - K&N high flow pre-oiled filter element

Due to the many different brands of pistons that are available

Direct replacement for 519380 (chrome) and 519458 (black) 55-72 H-D OEM style taillight

Self tapping pivot shaft, swingarm. +.025" OS - 58-84 4-sp Big Twin (excl. Softail) (NU) 505110 sealed and maintenance free (just0. 25" larger in diameter than the stock swingarm pivot shaft. Self tapping. Solves the problem of damaged or stripped threads in the left side of 4 sp Big Twin frames. Oversized version of OEM 47510 58 pivot bolt. Bad thread solution self tapping +. 025" oversize