For #86038 2 SPEED TRANSMISSION (NITRO 3)
Replacement part: #76969
Available from HPI Racing are a selection of Aluminum Threaded Pinion Gears for the Nitro 3! This wide range of gears allows Nitro 3 racers with the #86038 Two Speed Transmission to fine tune the gearing for any size track.
 
Download PDF instructions for #76981 (0.2 MB)