This is an optional Mugen 48 Tooth Spur Gear for use with the optional HTD (High Traction Diff) Center Differential (MUGE2245).
The HTD Center Diff (MUGE2245) comes standard with a 46 tooth spur gear, but other optional spur gears are available:
- MUGE2234: HTD Spur Gear (44T)
- MUGE2235: HTD Spur Gear (46T)
- MUGE2236: HTD Spur Gear (48T)