Sale

Drivetrain Manual Transmissions and Components

BERT TRANSMISSIONS

Front Counter Gear

$147.87 $144.99 Save $2.88

SKU: B05E 21

In Stock
In Stock
Ships by Jun 7
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Bert 21 is a front counter gear for late model Bert transmissions. Constructed from steel with a natural finish, it is sold individually.

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.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandBERT TRANSMISSIONS
Part NumberB05E 21

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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