Hot Racing - Heavy Duty Steel Bevel Gear Set, 8 Tooth Pinion, 27 Tooth HPI120098 If you're using the radio

If you're using the radio system in a nitro or gas vehicle equipped with a LiPo receiver battery

Compatible with optional device - the portable Digital LED Program Card which is especially convenient for outdoor use

Displacement: 4

One added benefit of the Nitro Star F3

This super light weight Li-Poly battery is designed to power the electronics of 1/10th & 1/8th scale gas powered race cars

Hot Racing - Heavy Duty Steel Bevel Gear Set, 8 Tooth Pinion, 27 Tooth HPI120098 If you're using the radioThis is the Hot Racing 27T 8T HD 0. 9 Module High Pinion Bevel Gear Set. Included: One 8T Bevel Gear One 27T Bevel Gear Features: Compatible with Axial AR44 axles Hardened steel for increased strength Provides over drive for the front axle