Flywheels - Steel Flywheels

External Balance Steel Flywheel Gen 4,5 & 6 B/B Chevy (Top/Bellhousing Mount Starter)

These all new steel flywheels are manufactured from certified billet material that will not break up under the stress and severe punishment of on and off throttle in high RPM marine environments.

Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. Giving you the edge you’re looking for.

Billet construction

• Accepts Mercury couplers and heavy duty drive plates
• Multi-point ring gear attachment
• 33 Ounce (Gen 4) and 42.5 Ounce (Gen 5/6) Counterweight options
• Light weight yet durable
• 168 tooth gear
• Weight: 28 lbs.

NOTE: Big block Chevy's flywheel (or flexplate) counterweight balance changed significantly with the introduction of the Gen 5 and 6 engines around 1991 due to the switch to a one-piece rear main seal. This change increased the external balance offset from approximately 33.0 to 42.5 ounce-inches for the Gen 5/6 engines and even shifted to a different spec of 41.7 ounce-inches for some Gen 6 forged cranks.

Internal Balance Steel Flywheel LS 1, 2, 3, 6, 7 Chevy (Top/Bellhousing Mounted Starter)

These all new steel flywheels are manufactured from certified material that will not break up under the stress and severe punishment of on and off throttle in high RPM marine environments.

Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. 

• Accepts Mercury couplers and heavy duty drive plates
• Multi-point ring gear attachment
• Light weight yet durable
• Zero/neutral balance • 168 tooth gear
• 28 lbs.

Internal Balance Steel Flywheel Gen 4,5 & 6 B/B Chevy (Top/Bellhousing Mounted Starter)

These all new steel flywheels are manufactured from certified material that will not break up under the stress and severe punishment of on and off throttle in high RPM marine environments.

Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. 

• Accepts Mercury couplers and heavy duty drive plates
• Multi-point ring gear attachment
• Light weight yet durable
• Zero/neutral balance • 168 tooth gear
• 28 lbs.

Steel Flywheel - External Balance For Gen 4, 5 & 6 Big Block Chevy 454 CID (Bottom Mount Starter)

These all new steel flywheels will not break up under the stress and severe punishment of on and off throttle in high RPM marine environments.

Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. Giving you the edge you’re looking for.

• Steel construction
• Accepts Mercury couplers and heavy duty drive plates
• Multi-point ring gear attachment
• 33 Ounce (Gen 4) and 42.5 Ounce (Gen 5/6) Counterweight options
• 168 tooth gear
• Weight: 32 lbs

NOTE: Big block Chevy's flywheel (or flexplate) counterweight balance changed significantly with the introduction of the Gen 5 and 6 engines around 1991 due to the switch to a one-piece rear main seal. This change increased the external balance offset from approximately 33.0 to 42.5 ounce-inches for the Gen 5/6 engines and even shifted to a different spec of 41.7 ounce-inches for some Gen 6 forged cranks.

Steel Flywheel - External Balance For Gen 5 and 6 Big Block Chevy 502 CID (Bottom Mount Starter)

These all new steel flywheels are manufactured from certified billet material that will not break up under the stress and severe punishment of on and off throttle in high RPM marine environments.

Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. Giving you the edge you’re looking for.

• Steel construction
• Accepts Mercury couplers and heavy duty drive plates
• Multi-point ring gear attachment
• Light weight yet durable
• 168 tooth gear
• Weight: 32 lbs

Steel Flywheel - Internal Balance For Gen 4, 5 and 6 Big Block Chevy (Bottom Mount Starter)

These all new steel flywheels are manufactured from certified billet material that will not break up under the stress and severe punishment of on and off throttle in high RPM marine environments.

Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. Giving you the edge you’re looking for.

• Steel construction
• Accepts Mercury couplers and heavy duty drive plates
• Multi-point ring gear attachment
• Light weight yet durable
• 168 tooth gear
• Weight: 32 lbs

Hardin Steel Flywheel Internal Balance GM (LS1-LS7)

Ring Gear Tooth Quantity:168-tooth, Rear Main Seal Style:1-piece, Flywheel Material: Steel

These precision steel flywheels deliver all of the strength and reliability that you need in a performance application) Cast flywheels are porous units designed for low rpm truck and industrial applications) Steel provides a shatter free strength that could mean the difference between ripping your boat in half under way. These neutrally balanced units drilled to accept popular Mercruiser high Performance couplers.

• Accepts Mercury couplers and heavy duty drive plates
• Multi-point ring gear attachment
• Zero/neutral balance • 168 tooth gear
• Bottom Mount Starter Flywheel
• Weight: 32 Lbs

Internal Balance Steel Flywheel LSA/LSX Chevy (Bottom Mounted Starter)

These all new steel flywheels are manufactured from certified material that will not break up under the stress and severe punishment of on and off throttle in high RPM marine environments.

Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. 

• Accepts Mercury couplers and heavy duty drive plates
• Multi-point ring gear attachment
• Zero/neutral balance • 168 tooth gear
• 32 lbs.

TITAN Dampener Plate / Steel Flywheel Combo for GM up to 1600HP Description GM Big Block

Hardin Marine has again elevated the level of performance drive train options. Until now the industry has been limited by the fact that the largest damper plate available was rated at merely a 1000 ft lbs. While this has been used by many boats with more power than that its also has been the cause of horrific failures and product/trans damage.

This new drive plate combo take the same technology used to build the OEM 1650 HP Turbo QV4's drive plates and mates it to a proprietary flywheel assembly that retrofits to a traditional Big Block Chevrolet engine family.
So if your building an engine that makes monster power this is the solution to harnessing that horsepower and torque