Drivetrain› Automatic Transmissions and Components

Sonnax

2nd Gear "Corvette" Ratio Servo Kit

$61.10

SKU: 77701-04K

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Sonnax 2nd Gear "Corvette" Ratio Servo Kit is a performance servo kit designed for 4L60 (700-R4) and 4L60-E transmissions. It provides an increased apply area for improved holding power and firmer 1-2 and 3-4 shifts. This kit features D-rings in place of OE seal rings for better sealing during apply and release.

Fitment

Fitment Guaranteed

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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

BrandSonnax
Part Number77701-04K
CategoryDrivetrain

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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