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Vehicle Info NeededSONNAXPART NUMBER: 852-18032-RSK
18032-RSK 1.80 Ratio Big Shaft Rear Sun Gear Kit, Powerglide
$52189
Ships on 09/16/2026
Lowest Price Guarantee- 1.80 Ratio Big Shaft Rear Sun Gear Kit
- Powerglide
Sonnax 18032-RSK Features:
Stop worrying about input shaft failure when running the GM Powerglide in the most extreme applications. Sonnax offers the only big input shaft upgrade with custom components designed to work together for reliable performance. Whether you have an existing assembly or start from scratch in the gear ratio of your choice, it’s the best way to connect huge power to Sonnax 1.80 ratio planetaries for great run after run with minimum downtime.
The 1.80 ratio big shaft rear sun gear kit 18032-RSK is one of the five components in the Sonnax Powerglide big shaft system.
- Gear prepped to accept big input shaft's fine-tooth rear spline
- Custom, PTFE-coated thrust washer replaces sun gear thrust bearing
- Rear Sun Gear 32 Spline
- Thrust Washer
- Gear Process Level: Extreme
- Ratio: 1.80
- Spline Tooth Count: 32
Note: The Sonnax big shaft system for Powerglides requires changing to a 35-spline turbine hub.
Contains:
Specs:
Part TypeAutomatic Transmission Planetary Gear
BrandSONNAX
Package Height2.9
Package Width4.7
Package Length5.2
Weight0.94 PG
Part CategoryPerformance Parts
Vendor Part Number18032-RSK
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
