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Hays 20-235 Aluminum Flywheel, 1970-90 BBC, 168 Tooth
Hays 20-235 Aluminum Flywheel, 1970-90 BBC, 168 Tooth

Hays 20-235 Aluminum Flywheel, 1970-90 BBC, 168 Tooth

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Hays 20-235 Aluminum Flywheel, 1970-90 BBC, 168 Tooth
Hays 20-235 Aluminum Flywheel, 1970-90 BBC, 168 Tooth
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We estimate this item will ship on or before April 3rd.
Part # 42520235
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  • This item ships directly from the manufacturer. It may take an additional 10 business days for Hays to ship this item.
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MFG. Part #:
Tooth Count:
15 lbs.
Sold in Quantity:
GTIN Code:
Engine Balance:
SFI Rating:
Rear Main Seal Style:
Flywheel Material:
Billet aluminum
Replaceable Friction Surface:


Hays Aluminum Flywheels, the favorite choice of many road racers, are also popular with the serious drag racer running a light car and large cubic inch motor. Machined from 7075 T-6 forged billet aluminum, this high strength alloy surpasses all material specs as to strength and centrifugal distortion. All Hays Aluminum Flywheels feature a replaceable steel or bronze heat shield friction surface and are drilled to accept either the Borg & Beck or Long-Style clutch pattern. The ring gear is securely mounted with welded tabs that are riveted to the flywheel to prevent spinning. Hays flywheels are certified under S.F.I. spec 1.1. Part No. 20-235 is a "Detroit Balance" flywheel, externally balanced to stock (counterweighted) specs. Application: Chevy 1970-90 454 with large bellhousing. Pressure Plate Pattern: Borg & Beck/Diaphragm 10.5" & Borg & Beck/Diaphragm/Long 11", Ring Gear Teeth: 168, Weight: 15.

Hays aluminum flywheels are manufactured from certified billet material that will not break up under the stress of high RPM and severe punishment of racing.

Some parts are not legal for use in California or other states with similar laws/regulations

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