HPI Racing 87257 3-Speed Tranny Assembled Savage X FEATURES: Fits all HPI Savage series trucks Higher top speed (top gear is 10% taller than stock) More torque (low gear is 10% shorter than stock) Fact INCLUDES: 3-Speed Transmission, instruction sheet Threadlock, HPIR1159 2mm hex wrench REQUIRES: Installing on Savage chassis following included instructions; jxs 1/17/08 ir/jxs