For 2019, the Honda CRF450 receives a host of updates for, making it lighter and more powerful. Rider comfort has been increased through the addition of adjustable mounting positions for the new Renthal Fatbar handlebar. It also comes with all-new black rims, The updates include a revised cylinder-head design, revised clutch lifter and pressure plate, new dual scavenger pumps, lighter front brake caliper uses a pair of 30mm and 27mm pistons (versus identical 27mm pistons), footpegs are 20% lighter, revised shock linkage works with all-new swingarm, five nozzle piston cooling jet, a different ignition map for each gear and a new exhaust that features a larger pipe diameter and optimized design at the branching location for increased power. Previously 31.8mm, the right and left pipes are now 35mm and 43mm, respectively. In addition, total tube length (from exhaust port to muffler end) is up 98mm on the right and 187mm on the left.

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