This is the Threaded Pinion Gear for the HPI R40. This threads onto the clutch bell and drives the spur gear. FEATURES: Metal Construction Anodized Red in Color Threaded for Easy Installation 1st Clutch Pinion Gear 32P 17T YOU WILL RECEIVE: One Metal Green 17T Pinion Gear for the HPI R40 REQUIREMENTS: Assembly onto Vehicle. SPECIFICATIONS: Inner Diameter: .47 (12mm) Outer Diameter: .75 (19mm) Thickness: .39 (10mm) Pitch: 32 Teeth: 17T COMMENTS: This is not for use as the 2nd gear.
