HPI Racing - Heavy Duty Spur Gear, 45Tx5mm, Savage XL (Opt) Hardware & Fasteners Bolts The multi-varied directional tread design

The multi-varied directional tread design allows for a directional look with non-directional functionality

You also get flexible vinyl decals to put on the finishing touches

reduces maintenance time

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

The bag is constructed from a three-ply design

HPI Racing - Heavy Duty Spur Gear, 45Tx5mm, Savage XL (Opt) Hardware & Fasteners Bolts The multi-varied directional tread designThe 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.