making this a modification you really feel

05-SHIM-7040 : Primary clutch spider shim to be used on Cat 1100 Turbo

Available for the standard top end or for a 96mm big bore motor and head gaskets available in different thicknesses depending on application

Ceramic coated to keep heat in the pipe and reduce under hood temps

Made entirely of stainless steel

Exhaust Full Velocity / F8 ('10-11) Category_Default Category/SLED/Tools & Misc making this a modification youWe extensively tested this muffler to ensure the best combination of power, light weight, quiet sounds levels, and affordable price. Weighing in at a mere 8 lbs (11 lbs lighter than stock), shed some fat from your Cat! The muffler produced a noticeable increase in punch and throttle response as well. One of our main concerns was sound levels so our final design makes a nice deep throaty sound when you punch it but is not much louder than stock,