Product Summary

Muncie 4-Speed, Saginaw 3-Speed, Saginaw 4-Speed, T10

  • Heavy-duty frictions are utilized for improved durability
  • Kit contains a three disc 1-1/8" x 10 spline replacement clutch pack
  • Performance is improved due to the increased coefficient of friction
  • Increased torque capacity gives the driver a better clutch pedal feel, thereby improving drivability
  • Clutch packs feature an advanced friction formula developed from rigorous testing and feedback in the NASCAR Sprint Cup Series
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Key Specs

MFG. Part #309390
Input Shaft Spline Count10
Input Shaft Diameter1.125"
Diameter7.25"
Hub StyleSolid
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Quarter Master 309390 Details

Quarter Master Friction Disc Packs feature an advanced friction formula developed from rigorous testing and feedback in the NASCAR Sprint Cup Series. The increased torque capacity gives the driver a better clutch pedal feel, thereby improving drivability. Performance is also improved due to the increased coefficient of friction. Each disc pack comes standard in our clutch products and is available with one, two or three discs. They can also be used in competing products using .105"-thick frictions.

  • Disc packs w/ improved friction formula for racing applications
  • Friction formula developed from extensive testing w/ NASCAR Sprint Cup race teams
  • Increased torque capacity provides better clutch pedal feel
  • Heavy-duty frictions are utilized for improved durability
  • Three disc 1-1/8" x 10 spline replacement clutch pack

Tech Tip:  When installing a new clutch, be sure to follow the manufacturer's instructions for correct set-up.  You should also replace the pilot bushing/bearing.

Tech Tip:  To extend the life of your expensive racing clutch you should not use it to load the car on or in your trailer.  The amount of slippage this causes is worse than a night of racing.

Quarter Master 309390 Specifications

KEY SPECS
MFG. Part #309390
BrandQuarter Master
Input Shaft Spline Count10
Input Shaft Diameter1.125"
Diameter7.25"
Hub StyleSolid
GENERAL
Sold in QuantityEach

Ratings & Reviews

5

3 Reviews

Overall Assessment

Customers find the product to be of high quality and excellent practicality, with specific praise for its compatibility and performance across different brands. Highlighted features include its great value for price and usability even in diversified applications, such as sport mods with a Tilton triple disc clutch. Customers confirm its superior features compared to competitors and have shown satisfaction, indicating they would buy again.

5

3 reviews

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Quarter Master products are top of line.

5.0

6 months ago

Spline

98271

Verified

Preparing for the 2026 race season, Quarter Master will the winner.🏆

Would Recommend

i would buy this item again . price it great

5.0

3 years ago

keith

indianapolis

Verified

prompt shipping always great service from speedway motors!

Would Recommend

Works good, even in different brand of clutch

5.0

5 years ago

Andrew

Crete NE

Verified

I use it in a sport mod. I have a tilton triple disc clutch, but these quartermaster discs work well in it

Would Recommend

Showing 3 of 3 reviews

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