BILTWELL Grips - Alumicore - Replacement - Black 6706-0101 Blegh T-Shirt 1-3/4 head pipe steps up

1-3/4 head pipe steps up to 1-7/8 into the collector to increase flow and improve performance

and pectoral areas

Owens-Corning fiberglass replacement packing keeps silencers performing as they're meant to

Offers huge performance gains

Sound Insert with Spark Arrestor DB @ Idle 80

BILTWELL Grips - Alumicore - Replacement - Black 6706-0101 Blegh T-Shirt 1-3/4 head pipe steps upTechnically manufactured with a forged and CNC lathe turned 6061 T6 aluminum tubing Grips comprised of Thermoplastic Velcanizate (TPZ) rubber sleeve and installed over the tube's knurled surface for traction and comfort Internal gear interface inside the AlumiCore grip for TBW is forged into the grip's aluminum sleeve, so it will never break or disengage from the TBW module's gear interface