Power package includes full system Barker exhaust, Pre-programmed ready to bolt on EFI Controller, and Intake system.

Complete package with sparks full system exhaust, your choice of intake and fuel controller. All EFI controllers come pre-mapped ready to bolt up.

eveloped through hours of dyno and track testing, this full system is the optimum exhaust system for the YFZ450R. Hard-anodized oval aluminum muffler shell. Cone-style end cap, Completely rebuildable, Uses stock heat shield, Meets AMA®/ ATVA® 99bBA requirements, Used by the Yamaha Factory Racing Team.

Complete package with exhaust, intake and fuel controller. All of our fuel controllers come pre-mapped ready to bolt up. This kit comes with the HMF Exhaust and your choice of intake and EFI controller

This kit comes with 1 Lexx Slip on exhaust system and your choice of intake and EFI controller! Our best bang for the buck kit yet!

Brand new YFZ450 and YFZ450R Monster big core. Comparable in power to the old Jardine RT4. A high performing Inframe pipe with maximum power in mind. Reverse megaphone edition provides awesome all around power while the Big Core edition gives you the best top end money can buy! Each kit comes complete with fuel controller, intake, and full system exhaust

Motoworks proprietary headpipe design and performance-tuned canister lengths and diameters create more "ride-able" power, that drives off the bottom and pulls longer and harder through the mid-range and top-end, delivering exceptional acceleration.
Kit comes complete with Full system exhaust, your choice of intake and EFI controller

Kit comes complete with a fully system Rossier exhaust, your choice of fuel controller, and your choice of Intake kit. All power commanders will come pre-mapped ready to go.