Simpson Memory Fit Fire Resistant Racing Undershirt - SFI 3.3 NKA Nomex fleece liners used by

Nomex fleece liners used by the competition do not absorb moisture well and are not as durable

Not recommended on the rear axle

race‑grade performance to the rear axle of BMW E36/E46 (and compatible models)

TIG welded

A naturally low-wearing pad

Simpson Memory Fit Fire Resistant Racing Undershirt - SFI 3.3 NKA Nomex fleece liners used bySimpson's Memory Fit line of fire resistant racing underwear features a unique fabric that becomes softer with age, guaranteeing a fit that is made just for you! The lightweight, anti microbial treated fabric bends, moves, and stretches with you, reducing bunching and driver discomfort. Athletic cut, and contrasting stitching gives a stylish, modern look.