What is the main benefit of an aluminum flywheel?

An aluminum flywheel is significantly lighter than a stock steel one. This reduced weight means less rotational mass, allowing your engine to rev up and down more quickly, which can lead to a more responsive feel.

Does this flywheel come with hardware?

This listing is for the SPEC aluminum flywheel (Part# SN21A) only. It is recommended to check the manufacturer's installation guide or consult with a professional to determine if any additional hardware is required for your specific application.

What is the difference between a 6-bolt and 7-bolt crank?

The number of bolts refers to how the flywheel attaches to the engine's crankshaft. This SPEC flywheel is specifically designed for engines with a 6-bolt crankshaft configuration. Using the incorrect flywheel can lead to improper installation and potential damage.

Specifications

Brand: SPEC
Part #: SN21A

Spec 77-79 Nissan 200SX 510/610/710 w/ 6 Bolt Crank Aluminum Flywheel

Name: Spec 77-79 Nissan 200SX 510/610/710 w/ 6 Bolt Crank Aluminum Flywheel
Brand: SPEC
SKU: spec-spec-77-79-nissan-200sx-510-610-710-w-6-bolt-crank-aluminum-flywheel-t14-360411
Price: 465.25 USD
Availability: BackOrder

$465.25

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 77-81 Nissan 200SX. SPEC aluminum flywheel for 6 bolt crank engines. Lighter weight for improved engine response.

Key Features

Fits 1977-1981 Nissan 200SX with a 6-bolt crankshaft.
SPEC aluminum flywheel for improved engine response.
Reduced rotational mass allows the engine to rev up and down more quickly.
Aluminum construction helps dissipate heat effectively.
Well-built component for drivetrain upgrades.

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About this part

Product Details

This product is a SPEC aluminum flywheel designed for your 1977-1981 Nissan 200SX with a 6-bolt crankshaft. A flywheel's job is to store rotational energy from the engine, smoothing out power delivery between combustion cycles and providing a surface for the clutch to engage with. Upgrading to an aluminum flywheel like this one can make a noticeable difference in how your engine responds to throttle inputs.

Compared to a heavier stock steel flywheel, this aluminum unit from SPEC is significantly lighter. This reduced rotational mass means the engine can spin up and down more quickly, giving you a more immediate feel when you press the gas pedal. It's a well-built component that's a popular choice when rebuilding or upgrading the drivetrain on these classic 200SX models. The aluminum construction also helps dissipate heat effectively.

When installing a new flywheel, it's always a good idea to check the manufacturer's instructions for proper torque specifications and any recommended break-in procedures. This flywheel is designed to be a direct fit for the specified 6-bolt crank engines, simplifying the installation process.