Hays 91-2104 Street 450 Conversion Clutch Kit

Compatible with 1965-1972 Ford 390/427/428/429/460 V8 - 11 in. 26-Spline Organic Disc with Lever Pressure Plate

PART# 91-2104

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Hays Street 450 Clutch Kits are an excellent upgrade from your stock clutch. Hays' newest 26-spline versions are designed to work in conjunction with a modern 5-speed or 6-speed transmission swap. Engines with mild modifications such as headers, intake manifold, or mild camshaft changes work well with this clutch. These clutch kits are designed handle stock or mildly modified engines up to 450 horsepower. It is a great clutch where drivability is the most important factor. It features upgraded damper springs which give 30% greater clamping force than a stock clutch allowing you to put more power to the ground and top quality organic composite disc material allows for smooth, no-chatter engagement. Hays' disc friction material is bonded to a steel backing plate that increases heat dissipation and provides excellent structural strength for higher RPM use. The Street 450 is a great choice for an upgraded stock clutch replacement.


  • Includes 26-spline clutch disc for use with most 5-speed and 6-speed conversions
  • Great drivability for power levels up to 450 horsepower
  • Smooth, chatter-free operation using top quality organic composite friction surface material
  • Upgraded damper springs gives up to 30% more clamping pressure than stock OE clutch
  • Steelback clutch disc features heavy-duty hub spring assembly for increased load capacity
  • All Street 450 clutch kits come complete with pressure plate, disc, release bearing, and alignment tool unless otherwise noted

Product Attributes

Brand Hays
Emission Code5
Manufacturer Part Number91-2104
Product TypeClutches
Part Number91-2104



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

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