Drivetrain› Manual Transmissions and Components
MFactory
B-Series Close-Ratio 3rd, 4th, and 5th Gear Set
SKU: MF-TRS-01BSB
Professional / shop required
Description
This gear set features carbon dual-cone synchronizers for 3rd and 4th gears, and a single-cone synchronizer for 5th gear, improving shifting performance. It includes specific ratios: 3rd gear at 1.636, 4th gear at 1.310, and 5th gear at 1.054.
Fitment
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Available on iOS & Android
Specifications
| Brand | MFactory |
| Part Number | MF-TRS-01BSB |
| Category | Drivetrain |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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