TRX450R ’04-’05 Fuel Customs Intake System The TRX system is a great addition to the bike! You will see much improved throttle response and better torque. This is the best bolt on you can buy. Key Benefits: Unique tapered design to create velocity Enhanced filter protection Improved throttle response Increased hp and tq across the rpm range Works with stock air box Parts Included In System Kit Includes: Tapered air horn tube Transition Ring Outerwear 8 ply filter Rubber Booty for stock carb Hose Clamps Bracket to run without box Price: $239.00 Quantity: