HPI Racing - Heavy Duty Spur Gear, 45Tx5mm, Savage XL (Opt) Hardware & Fasteners Bolts The bag is constructed from

The bag is constructed from a three-ply design

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

replaces the stock nylon gears perfectly

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

Handmade from durable metal and finished with a heavy-duty

HPI Racing - Heavy Duty Spur Gear, 45Tx5mm, Savage XL (Opt) Hardware & Fasteners Bolts The bag is constructed fromThe 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.