FITS ALL S UZUKI LTR450 YEARS AND MODELS! One BRAND NEW genuine OEM Suzuki head with a full race dune/trail port. Works with stock or big bore cylinder and stock or after market valves. If you like we can assemble the head with standard or +1 valves. Please check your order thoroughly when receiving it. We recommend that this kit be installed by a qualified mechanic with experience working on these types of motors. Piston comes with specific instructions for setting the ring gap. If you do not follow these exactly your motor will fail. The item "LTR450 LTR 450 LT-R450 Cylinder Head Ported Race Dune Drag Port Polish Assembly"…