Factory Race 4.4 X 14 External Bypass (4 Tube) Piggyback Shock (Right) 981-44-401-R Throttle Bodies & Spacers our 2-Inch GM Blocks are

our 2-Inch GM Blocks are made from cast iron just like the factory blocks

Specs for XL80 (Per Light):

The classic louvered design is four inches across at its widest point (compared with six inches of the original RB10) and are offered in cab-length sizes that fit most popular trucks

Simple Installation:  Everything is included for the simple installation

Factory Race 4.4 X 14 External Bypass (4 Tube) Piggyback Shock (Right) 981-44-401-R Throttle Bodies & Spacers our 2-Inch GM Blocks areFOX devotes countless hours of research and development to design race winning suspension that withstands incredible punishment and provides consistent performance you can rely on. Regardless of whether you are flying high over the desert or struggling to stick to a rock face on an off camber climb, our shocks will give you the damping performance, suspension control and proper spring rate to get the job done.