Inclues three shims in each size from 1.20mm to 3.50mm in .05mm increments.

One piece stainless steel. Stellite tipped valves. Impregnated by a special German process .002" deep and .0002" surface buildup to improve wear properties and reduce friction.

Highest quality materials machined to precise specifications for the best possible fit and durability. Each lightweight racing valve comes with titanium retainers, chrome silicon springs and steel collars.

All valves are completely CNC-machined and precision ground. Thermally sprayed coatings are applied to protect against wear on the stem and valve head.

Made of the highest quality spring wire and precision wound to close specifications. Allows for the use of higher RPM and more aggressive cam profiles without the loss of valve ...