SG-B136-CS3 — GSR Countershaft 3rd Gear
Description
The SG-B136-CS3 is a countershaft 3rd gear for Honda B-series (GSR/B18C) gearboxes, engineered for crisp 2→3 upshifts and endurance durability. Precision-hobbed helical teeth with edge relief plus ground bore & faces deliver quiet, rigid mesh and smooth synchro engagement with the mating mainshaft 3rd gear—making it a true drop-in for rebuilds or performance refreshes.
Specification
Tooth Count: 34T
Tooth Form: Helical
Material: SCM415 / SAE 8620 alloy case-hardening steel (or equivalent)
Heat Treatment: Carburized & quenched
Surface Hardness: HRC 58–62
Manufacturing: CNC turning/milling; precision hobbing; dog-tooth finishing & deburring; bore & locating faces precision-ground
-
Model:B136-CS3