M5OD-R2 5-Speed Manual Transmission
Designed by Mazda for Ford’s full-size pickups, the M5OD-R2 (M5R2) houses five forward speeds (including a 0.80:1 highway overdrive) plus a fully synchronized Reverse inside a one-piece waffle-ribbed aluminum case with an integral bellhousing.
- Ratios (1st / 2nd / 3rd / 4th / 5th / Rev)
- 3.90 / 2.25 / 1.49 / 1.00 / 0.80 / -3.39 : 1
- Main-to-Countershaft Centerline
- 84.50 mm vertical offset · 24T-to-37T head drop
- Synchronization
- All 5 forward speeds + Reverse (brass blocker rings)
- Lubrication
- Low-viscosity MERCON ATF (3.6 L) for fast synchro action
Part Assemblies in M5OD-R2 Transmission
M5OD-R2 Aluminum Main Case, Bellhousing & Extension
One-piece rib-reinforced die-cast aluminum bellhousing and gearbox case with internal splash-lubrication gutters.
Input Shaft, Output Mainshaft & Pocket Bearings
Two coaxial shafts sharing the exact same upper centerline—coupled through a hollow pocket needle bearing.
Forged Countershaft Cluster Gear & Bearings
One-piece forged lower layshaft carrying four integral helical gears that spins whenever the clutch is engaged.
1st–5th Helical Speed Gears, Needle Bearings & Reverse Idler
Constant-mesh helical speed gears that freewheel on split needle roller bearings until locked by a synchronizer.
1–2, 3–4 & 5th–Reverse Borg-Warner Synchronizers
Miniature brass cone clutches and splined dog sleeves that match shaft speeds in milliseconds for clash-free shifting.
Top Shift Cover, 3-Rail Interlocks, Forks & Lockout Cam
Three parallel shift rails and hardened transverse interlock pins that make selecting two gears at once physically impossible.
Floor Shifter Tower, Lever & Transmission Switches
Direct-turret floor shifter lever, pivot ball bushings, backup lamp switch, neutral sense switch, and VSS drive.