Steahly flywheel, test riders reported a more manageable power delivery and better traction when getting on the gas. The flywheel also gives the powerband just a little more breadth, by slowing down rpm buildup and carrying the extra inertia into the top end. ( 5) Application. Like most bike modifications, the value of this part depends greatly on the rider and the track. Riders who like to roll on the gas and use throttle control to maximize traction will love the Steahly fly- wheel. Wheel-spinning two-stroke holdouts may not. The Steahly weight tames the power enough that you can meter the power, especially on hardpack terrain. ( 6) Flame-on. Many CRF450 riders suffer from flame- out issues. The light flywheels of the stock CRF450 don’t have enough inertia to keep the bike percolating when the throttle is snapped shut at low rpm. The heavier flywheel reduces the risk of stalling, but nothing elimi- nates it.
WHAT’S THE SQUAWK? Two minor issues: (1) If you can’t borrow one, you’ll have to purchase a flywheel puller tool (which adds about 20 bucks to the tab). ( 2) The clearance between the fly- wheel and the supplied fas- tener is tight, so having the right cam chain bolt is cru- cial.
WHAT IS IT? A 17-ounce flywheel weight for the 2009- 2010 Honda CRF450. Flywheel weights are often over- looked as a viable performance modification by motocross- only types. Like handguards, skid plates and pants with pockets, flywheels are often lumped into the enduro category. We would rather stay away from the pants, but we have a hunch that a heavier flywheel could be just what many fuel-injected CRF450 riders are looking for.
WHAT’S IT COST? $164.95.
CONTACT? www.steahlyoffroad.com or (800) 800-2363.
WHAT STANDS OUT? Here’s a list of things that stand out with the Steahly CRF450 flywheel weight. (1) Design. There are two ways to add weight to your bike’s flywheel—bolt-on weight or complete flywheels. Because of the CRF450’s tight engine confines, Steahly was limited to the replacement flywheel option. ( 2) Weight. Steahly offers CRF450 flywheels in 9-, 11-, 13-, 15- and 17-ounce options, but on the 2009-10 CRF450, only the 17-ounce weight had any effect. It sounds heavy, but because of the small diameter of the CRF450 fly- wheel, it isn’t as massive as it might seem. ( 3) Installation. All you need is the correct flywheel puller and an impact wrench. Be sure and follow the directions and be sure to install the supplied bolt on the timing chain fastener. When removing the stock flywheel, take care not to lose the woodruff key on the crank end. ( 4) Performance. In stock trim, the fuel-injected CRF450 power delivery is super-responsive at the crack of the throttle. So responsive that it can cause unwanted wheelspin, wheelies or jerkiness. After installing the This could be a five-star product for a smooth racer on a hard-packed track or a two-star product for a whiskey throt- tle addict in sand. Either way, it addresses specific needs of the fuel-injected CRF450, and MXA’s verdict is that it stays on our test bike. MXA RATING
STEAHLY HONDA CRF450 FLYWHEEL WEIGHT