HPI Racing - Heavy Duty Spur Gear, 45Tx5mm, Savage XL (Opt) Hardware & Fasteners Bolts For the version with a

For the version with a Silver flywheel order TRX100S308 For the replacement clutch shoes and springs order RTRX100S3

ready for you to apply your own personal touch

replaces the stock nylon gears perfectly

Its precision and performance also make it perfect for 500-size helicopters

HPI Racing - Heavy Duty Spur Gear, 45Tx5mm, Savage XL (Opt) Hardware & Fasteners Bolts For the version with aThe more teeth on the clutch bell (or fewer the teeth on the spur gear) the more top speed with slightly reduced acceleration, ideal for smooth surfaces or longer straights. The fewer number of teeth on the clutch bell (or the higher number of teeth on the spur gear) better the acceleration and torque with slightly less top speed, ideal for rough terrain and steep hills.