Banks Power 00-06 Toyota 3.4/4.0/4.7L Tundra Monster Exhaust System - SS Single Exhaust w/ Black Tip3 inch stainless mandrel bent cat back pipes and straight thru muffler cut backpressure by 76%, improve flow by 114%, and add up to 11 hp and 11 lb ft. Improves acceleration, too! throaty sound, 4 inch polished tip. TUNDRA PICKUP: Monster exhaust system's 3 inch mandrel bent pipes are formed of stainless, heavy wall tubing and bolt behind the catalytic converter, slashing backpressure by 76%. Banks' free flowing, straight through polished stainless