Retno 153T-6 SBC/BBC Chevy Racing Flywheel – 4140 Steel, 7.25" Clutch Pattern

Retno 153T-6 SBC & BBC Racing Flywheel

The Retno 153T-6 Chevrolet Racing Flywheel is designed for Small Block Chevy (SBC) and Big Block Chevy (BBC) performance and racing applications. Manufactured from high-quality 4140 steel, this flywheel is built with an emphasis on strength, durability, and precision for demanding motorsport environments.

Featuring a 6-bolt, 7.25-inch clutch assembly pattern, the Retno 153T-6 is designed for compatible racing clutch setups. It comes finished in black oxide for a clean, professional appearance.

This flywheel features 12-point head design bolts engineered with a larger-than-stock shank diameter for increased strength and improved registration. Manufactured from aerospace-grade steel, the bolts are heat-treated prior to thread rolling and machining. Each bolt head is drilled for safety wiring, making them well suited to applications where additional fastener security is required.

Whether you're building a dedicated race car or upgrading a compatible performance drivetrain, the Retno 153T-6 delivers carefully manufactured components for demanding applications.

Product Features

• Manufacturer: Retno

• Model: 153T-6

• Application: Small Block Chevy (SBC) and Big Block Chevy (BBC)

• Material: 4140 steel

• Clutch Pattern: 6-bolt, 7.25-inch clutch assembly pattern

• Finish: Black oxide

• Bolt Design: 12-point heads with larger-than-stock shank diameter

• Bolt Material: Aerospace-grade steel

• Bolt Treatment: Heat-treated prior to thread rolling and machining

• Safety Features: Bolt heads drilled for safety wiring

Fitment & Compatibility

Designed for compatible Small Block Chevy and Big Block Chevy racing applications. Please verify flywheel, clutch assembly, and drivetrain compatibility before ordering.

For additional fitment questions or inquiries about related racing components, contact Retno through our Specialty Order Shop (SOS) contact form.

Retno — Precision Components for Racing and Performance Applications.