Throw Out Bearings

Stock clutch hydraulic throwout bearing for stock-style 3-speed and 4-speed Chevy clutches only. Install simply by replacing one bolt from the front of the transmission with one of the provided studs, then shim to fit. Use 3/4" bore master cylinder.
This bearing is made much smaller than the racing version so that it will fit behind the "thicker" stock style clutches. This redesigned new housing is much cleaner as it has no boss on the body. Plus, this design also has a retainer on it to prevent over extension and seal damage.

Item Details

Most GM 3-speed and 4-speed transmissions.
Application

910-25610 Bearing typically used with:

All OEM and OEM replacement clutches
Jerico 2-speeds
Saginaw 3-speeds
Muncie 4-speeds
Saginaw 4-speeds
Borg-Warner 4-speeds
Jerico 4-speeds
1982-92 S10/S15 T5
WILL NOT work with:

Ram Coupler
May not work with racing style clutches because of limited extension on our hydraulic throw out bearings. The travel on our 910-25610 is .688" inches.
Notes

The fittings are AN 4 male for the "feed" and the "bleed" lines. Both fittings are tapped internally to accept the bleeder.
To build your own external bleeder for this bearing, purchase (1) each of the following parts:
835-2200063 (1/8"BLEEDER)
617-4025 (AN4 to 1/8"female)
91031842-4 (12" AN 4 line)

Offers a smooth, lighter pedal effort
Inside diameter measures 1.379" and has .70" of travel
Features an aluminum construction with a natural finish
Designed to ease installations in vehicles with chassis constraints
Includes two 1/8"NPT to AN3 adaptors and one AN3 to 1/8" female adaptor

A heavy duty version of the 78125 is available under part # 605-78126. 605-78126 utilizes larger o-rings and backup rings to help retain the o-rings in the grooves and prevent leakage. RAM recommends the HD version 605-78126 for all street driven applications.

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 single or multi-disc 5.5-inch to 7.25-inch diameter racing clutches
Works with aftermarket GM-spec Tremec TKO-500 and 600 5-speeds
Lower pedal effort compared to stock-type mechanical clutch linkage
Easily upgraded to an external bleeder configuration
3/4-inch bore master cylinder recommended for most applications
Complete kit features hydraulic release bearing, anti-rotation studs, and adjusting lock nuts
Speedway Motors engineered product offers high quality at an affordable price point
Easy Hydraulic Clutch Actuation for Your Race Car
Prepping your race car for the weekend race is a lot easier when you have a solid drivetrain putting your engine’s power to the ground. You’ve saved up and you are finally ready to step up your program with a great multi-disc racing clutch, a new bellhousing, and a strong transmission to ensure you make it through the season without issue. It is time to ditch that old mechanical clutch linkage too and all of its associated maintenance and adjustments as well. Keep that forward momentum going by using a solid hydraulic throwout bearing that will not put you on the trailer, ending your race weekend early! Speedway Motors’ new throwout bearing is CNC-machined from billet aluminum for light weight and superior strength and is the perfect pairing with your new driveline components to put you in the winner’s circle!

Everything You Need in an Easy to Install Kit
Speedway Motors’ hydraulic throwout bearing kit provides everything you need to outfit your racing drivetrain with a hydraulic throwout bearing at a great value. The kit features a new and improved throwout b

Info
Speedway pull type slave cylinder with 7/8" bore for clutch use. Works great with stock-style hydraulic throwout bearings or Ram Couplers. Has a 3/8"-24 inverted flare female inlet. Bleeder adapter and bleeder are included.

Ram shaft is 3/8" O.D.
Cylinder body is 4.09" long
Cylinder body is 1-7/16" O.D. at end by fittings
Cylinder body is 1-3/8" at opposite end of fittings
A 5/16” heim will fit both ends of cylinder (not included). Our heim part number is 1750202.

Note: For most multi-disc clutch set-ups we recommend the use of a smaller 3/4" bore master cylinder.