POWERGLIDE Planetary Assemblies

Optimized Performance Guarantees You Never Overpay or Underspec

Available fully assembled in four ratios and three performance levels, Sonnax planetary assemblies are the #1 choice of racers that demand outstanding performance and reliability.

Sonnax gear sets are a big step up from standard case-hardened and tempered varieties. High-quality materials combined with an advanced heat-treating process results in incredibly tough, wear-resistant gears.

Build the PERFECT Powerglide

Sonnax makes it easy to dial in options and select the perfect Powerglide planetary assembly or gear set.


Affordable Upgrade for Budget Builds


Extra Durability for Demanding Applications


Highest Quality Planetary Assemblies in the World

From carrier and output shaft to gears and thrust washers, every Extreme assembly component is refined for maximum durability. The ring gears are even pre-drilled for the Sonnax stabilizer system to prevent vibration and broken Reverse friction plates.

Powerglide Shafts and Gear Assemblies


Track-Proven to 1,500 HP


Track-Proven to 2,000 HP


Track-Proven to 3,000 HP

Sonnax Warranty 1 Year (Gears Only) 2 Years (Gears Only) 2 Years (Gears & Shaft)
Gear Material 9310 Suns
8620 Pinions
9310 Suns
9310 Pinions
9310 Suns
9310 Pinions
Gear Process Premium Premium
Advanced (Learn More)
Shaft Material Long Shaft = 4340
Short Shaft = HY-Tuf
Long Shaft = 4340
Short Shaft = HY-Tuf
Shaft Splines Cut Spline Cut Spline Rolled Spline
Thrust Washers OE Steel-Backed PTFE Steel-Backed PTFE
Ring Gear Standard Standard Maximum Duty

Applies to planetary assembly kits only

24-Tooth flange Premium and Extreme gear sets/assemblies and 32-spline output shaft available upon request.

Big Shaft System

Go BIGGER with Sonnax Extreme Planetaries

Stop worrying about input shaft failure when running the Powerglide in the most extreme applications. Sonnax offers the only big input shaft upgrade with custom components designed to work together for reliable performance.

Watch the video to learn how easy it is to level up an existing planetary assembly or build from scratch in the gear ratio of your choice. Click here to learn more about the big shaft system.

Powerglide 1.58 Ratio Gear Set

1.58 Ratio - Join the Powerglide Revolution

Control You Can Count On – Even at Extreme Horsepower

The Sonnax 1.58 delivers tunable control for Powerglides right at the start, when traction can make or break a race. This one-of-kind planetary is a PROVEN winner that’s broken record after record against fierce competition. Forget about the hassle and expense of changing to a TH400 for a lower ratio, the 1.58 in an efficient, lightweight Powerglide delivers the very best in performance and durability.

  • Push the limits while going faster than ever
  • Unrivaled quality & durability
  • Fully assembled & easy to install
  • Compatible with the Sonnax big shaft system

Use the Choose Your Build table to select the right assembly.

Watch one racer’s world record-breaking runs with the 1.58 on YouTube

Sonnax high performance products meet the toughest challenges faced by hard-working, daily-use drivetrains as well as racing units going all-out on the street or track.

Learn About Sonnax Heavy Duty & High Performance See All Heavy Duty & High Performance Upgrades