Polished Aluminum Ball Milled Valve Cover Breather (1" Neck Push In) They're designed to be installed

They're designed to be installed with no modifications

These drives fit under your stock timing cover and come complete with instructions

These crankshafts feature profiled aero-wing counterweights and have straight shot and chamfered oil holes

The TorqueWorm is a torque biasing 6 pinion gear type limited slip unit

Speedmaster DNA roller rockers are the toughest and most innovative rockers we've ever made

Polished Aluminum Ball Milled Valve Cover Breather (1" Neck Push In) They're designed to be installedThese aluminum push in breathers from Speedmaster are just the thing to prevent oil splash while adding some style. They are available in plain and ball milled designs to best suit your tastes and match your ride. Speedmaster breathers keep your crankcase properly vented and add a little shine under the hood. They are available in a wide variety of styles for many applications.