Efficient Compatibility: Fits most Chevrolet, BOP, and GMC manual 3- and 4-speed transmissions, including the Muncie series, Borg Warner T10, Saginaw, and GM-spec Tremec TKO-500/600 5-speeds when using a stock-style diaphragm clutch., Streamlined Installation: Easily installs by replacing one bolt from the transmission front, complemented with anti-rotation studs and air gap shims for a precise fit., Advanced Design Benefits: Boasts a cleaner redesigned housing with no boss, a built-in fail-safe retainer to prevent over-extension and seal damage, and the option to upgrade to an external bleeder configuration., Superior Performance: Lower pedal effort than stock-type mechanical clutch linkages, coupled with a low-profile design that fits comfortably behind thicker aftermarket clutch pressur
Chevy Hydraulic Throwout Bearing, GM Release Bearing Stock Clutch Speedway Motors
Chevy Hydraulic Throwout Bearing, GM Release Bearing Stock Clutch
Sku # 91025610
Mfr. Part # 91025610
Condition
New
Brand
Speedway Motors
Sold
Each
Details
Info
  • Simple installation upgrades your GM transmission to hydraulic clutch release
  • Built-in fail-safe retainer prevents over-extension of the hydraulic release bearing
  • Works with OEM-style diaphragm clutches for 3- and 4-speed GM transmissions
  • Works with aftermarket GM-spec Tremec TKO-500 and 600 5-speeds
  • Complete kit features hydraulic release bearing, anti-rotation studs, and air gap shims
  • Lower pedal effort compared to stock-type mechanical clutch linkage
  • Low-profile design fits behind aftermarket clutch pressure plates that are thicker
  • Easily upgraded to an external bleeder configuration
  • 3/4-inch bore master cylinder recommended for most applications
  • Speedway Motors engineered product offers high quality at an incredible value

Hydraulic Clutch Actuation for your Classic Muscle Car, Hot Rod, or Race Car

For many enthusiasts, building a hot rod means it has to have three pedals and not two. A manual transmission is a MUST in their build. We certainly enjoy rowing through the gears ourselves and nothing makes that easier than a hydraulic clutch release bearing (or “throwout bearing” as some still call it). If you buy a new vehicle with a manual transmission today it will come with a hydraulic release bearing setup and that is for two primary reasons, pedal effort and packaging. These same two reasons are exactly why you should consider a Speedway Motors hydraulic release bearing kit for your manual transmission install. No longer do you have contemplate using bulky factory clutch release linkages that bind or take up valuable header and exhaust space and that require constant adjustment and maintenance, nor do you have to live with a heavy clutch pedal that has you reconsidering driving your pride and joy in any traffic. Using a hydraulic release bearing solves all these issues yet is easy to setup when installing your transmission.

Everything You Need in an Easy to Install Kit

Speedway Motors’ hydraulic release bearing kit provides everything you need to ditch your stock, tired mechanical linkage and go hydraulic at a great value. The kit features a new and improved release bearing designed by Speedway Motors’ Engineering Team with a CNC-machined housing, extended fluid line fittings, and a built-in fail-safe retainer. There is simply no way to over-extend this release bearing with this retainer design. Typically over-extending the release bearing means pulling the transmission and reassembling the separated bearing (not to mention cleaning up all that hydraulic fluid in the bellhousing!). Also included are a sufficient number of release bearing shims to correctly set your air gap between the bearing face and clutch, as well as both 5/16- and 3/8-inch anti-rotation studs to fit a wide variety of GM manual transmission applications.

Fits a Wide Variety of Popular GM Transmissions

This hydraulic bearing kit will fit most Chevrolet, BOP, and GMC manual 3- and 4-speed transmissions, such as the Muncie family of 4-speeds, Borg Warner T10 and Super T10 4-speeds, Saginaw 3- and 4-speeds, and even the GM-spec Tremec TKO-500 and 600 5-speeds when using a stock-style 10-1/2- or 11-inch diaphragm clutch. Essentially any GM transmission with a 1-3/8-inch OD bearing collar. The Speedway Motors hydraulic release bearing ships configured with -4 AN fluid line adapters and a standard 1/4-28 thread bleeder screw for in bellhousing bleeding. This can be upgraded easily to an external bleeder setup using Speedway Motors AN hose and fitting kit, PN . Most applications will work exceptionally well with a 3/4-inch bore master cylinder, such as Speedway Motors PN . See our . Your hot rod may be a vintage time piece, but that does not mean your drivetrain has to be as well. Step into the 21st century with a Speedway Motors hydraulic clutch release bearing kit and your left calf muscle will thank you!

Learn more about hydraulic release bearings and how to properly install them by reading our tech article.

Application
This Part Fits

910-25610 Bearing typically used with:

  • All OEM and OEM replacement 10-1/2- and 11-inch diaphragm clutches
  • Jerico 2-speeds
  • Saginaw 3-speeds
  • Muncie M20, M21, and M22 "Rock Crusher" 4-speeds
  • Muncie SM420 and SM465 truck 4-speeds
  • Saginaw 4-speeds
  • Borg-Warner T10 and Super T10 4-speeds
  • Jerico 4-speeds
  • GM-spec Tremec TKO-500 and TKO-600 5-speeds

WILL NOT work with:

  • Ram Coupler
  • Ford or Long-style pressure plates
  • May not work with racing style clutches because of limited extension on our hydraulic throw out bearings. The travel is 0.688" inches.
Charts

(PDF)

Installation Tips
  • The fittings are -4 AN male for the "feed" and the "bleed" lines. Both fittings are tapped internally to accept the bleeder.
  • Bleeder threads are 1/4-28
  • To build your own external bleeder for this bearing, purchase (1) each of the following parts:
    • (1/8-inch bleeder)
    • (-4 AN to 1/8-inch female)
    • (12 inch -4 AN line)
Specs
Sold in Quantity
Each
Notes
Will not work with RAM couplers.
Outlet Fitting
-4 AN
Inside Diameter
1.375
Outside Diameter
2.875
MFG. Part #
91025610
Compressed Length
1.710
Throwout Bearing Style
Hydraulic
Travel
0.680
Extended Length
2.400
Reviews

I would buy again

Rated
Product Rating
by littlerigger on July 28, 2021

Summary: worked great

Yes, I recommend this product.

Muncie M22 to 2.4L ECOTEC

Rated
Product Rating
by Matt on February 15, 2021

Summary: Used in the mating of a Muncie M22 to a 2.4L ECOTEC engine for endurance racing. Shim system and O-ring shaft retainer are great.

Yes, I recommend this product.

Works as requested

Rated
Product Rating
by Top gun on February 12, 2021

Summary: Used on a 49 flathead works perfectly

Yes, I recommend this product.

Yes, Yes I would.

Rated
Product Rating
by Matt on February 07, 2021

Summary: Used to adapt a Muncie M22 Rock Crusher road race trans to a 2.4L Ecotec motor. Perfect fit who would have thought it. Easy to bleed with the supplied bleeder but I used the -4 JIC threads for external bleeder.

Yes, I recommend this product.

Definitely would recommend to anyone wanting to upgrade

Rated
Product Rating
by Nasty70 on January 13, 2021

Summary: Nice product

Yes, I recommend this product.

Related Items / Suggested Parts
Tech Support
We're here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through eBay Messaging and a knowledgeable Speedway Motors team member will be happy to help.
About
Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 72 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.