Drivetrain› Manual Transmissions and Components
BERT TRANSMISSIONS
Front Counter Gear
SKU: B05E 21
Moderate — 2–4 hours
Overview
Thousands of races have been won with Bert Transmissions, known for their dog-tooth final drive that ensures smooth shifts and positive engagement. By reducing driveline bind, Bert Ballspline Transmissions allow the rear suspension to move faster and smoother, improving traction on racing surfaces.
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Part #: 21
Transmission Counter Gear - Front - Steel - Natural - Bert Transmissions - Each
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | BERT TRANSMISSIONS |
| Part Number | B05E 21 |
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Returns & Fitment
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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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
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