NCY Oil Cap Crankcase Decompression Tube M20x2.5pThe NCY Decompression tube fits most motorcycles dipstick location. The issue with some vehicles that are big bored or modified is that a large amount of pressure is created in the crankcase. The small breather tube for the crankcase just doesn't always cut it. This tube is made to relieve the case pressure through a long tube. We recommend installing these tubes with a big bore kit.

The 157QMJ crankshaft comes with both bearings and the connecting rod already installed

Engine Gaskets Included

The thermal grade of the spark plug is of prime importance with tuning kits

This kit also comes available in 57

7/8-inch overall diameter

Some bars may need modification due to the diameter

Although a very simple design

The Clutch Cover has an oil sight glass now instead of checking the ridiculous dipstick

5" H x 10" D

white light for safety and has amber lights for dust

4/90 Bolt Pattern

Orders containing this product will ship ground only and cannot be shipped to Alaska