Bilstein BGT (Big Gas Threaded) shock absorbers are 46mm aluminum body monotube shocks designed for but not limited to Late Models Super Late Models Sprint Cars Dirt Late Models and Big Block Modified. These shocks feature a large 60mm nitrogen compartment that reduces rod pressure and keeps the nitrogen pressure more consistent during heat changes. The BGT shock absorbers are hard anodized with coarse threads on the shock body for added strength and ease of coil spring height adjustment. They are available with or without the BGT base valve and are completely racer rebuildable and revalvable. Optional adjustable shafts are available as well as composite wear sleeves to protect the shock tube.