Use the correct tool. It can be harmful to your engine to remove a flywheel without the correct flywheel puller. The pullers fit both OEM and Trail Tech flywheels.

Trail Tech does not have flywheel pullers available for these machines:
· '07-08 KTM SX-F. Use OEM flywheel puller.
· '08 KTM XC-F. Use OEM flywheel puller.

Flywheel Parts: Honda CRF 250R/250X/450R Flywheel Puller
$19.95
6100-P01
Honda CRF Flywheel Puller (all CRF450R '02-07, CRF250R '04-07 and CRF250X '04-07)
Kawasaki KFX250 '04-05 Flywheel Puller
Suzuki RMZ '04-05 Flywheel Puller

Flywheel Parts: KTM 4STK '00-07 Flywheel Puller
$19.95
6300-P01
KTM EXC/XC-W/MXC/SX Four Stroke '00-07 Flywheel Puller

Flywheel Parts: Yamaha WR450/YFZ450 Flywheel Puller
$19.95
6500-P01
Yamaha WR450 Flywheel Puller 2004-06
Yamaha ATV YFZ450 Flywheel Puller