DIAMETER : 63.5mm (2.5") OD 44.45mm (1.75") ID INCLUDES : 1 x 63.5mm (2.5") Firewall Grommet NOTE : Outer diameter: 63.5mm (2.5") Inner diameter: 44.45mm (1.75")
ATTENTION
All GMC Racing items that provide horsepower increases beyond those permitted by the highway code in the user's country are intended for competitive use only. GMC Racing declines all responsibility for any use of the product contrary to national regulations .
