Flywheels, Flexplates & Damper Plates - Flywheels

SELECTING THE FLYWHEEL THAT'S RIGHT FOR YOUR BOAT:

As flywheels spin, heavy flywheels store more energy than lighter ones. Engine and prop combinations that require more power or inertia to make the boat accelerate on to plane or launch without bogging the motor need heavier flywheels. However, heavier flywheels accelerate slower. Lighter flywheels create less inertia at launch, but accelerate quicker through the rpm band. When choosing a flywheel, you must consider the boats weight, operating rpm of the engine, and, most importantly, the gearing and prop size.

Billet Aluminum Flywheel - Externally Balanced For Gen 4 Big Block Chevy
Your Price:
$399.99

Billet Aluminum Flywheel - Externally Balanced For Gen 4, 5 & 6 Big Block Chevy 454 CID (Bottom Mount Starter)

755-8610

Billet Aluminum Flywheel - Externally Balanced For Gen 4, 5 & 6 Big Block Chevy 454 CID

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

These flywheels have machined retaining recesses every 120 degrees attaching locating tabs that have been installed on the ring gear making rear gear shift and movement a thing of the past. By using a lighter aluminum flywheel you will be rewarded with both faster acceleration and deceleration giving you the edge you're looking for.

  • Billet construction
  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Lightweight yet durable
  • Zero/neutral balance
  • 168 tooth gear
  • Weight: 12 lbs
  • Bottom Mount Starter

Billet Aluminum Flywheel - Externally Balanced For Gen 4 Big Block Chevy
Your Price:
$529.99

Billet Aluminum Flywheel - Externally Balanced For Gen 4, 5 & 6 Big Block Chevy 502 CID (Bottom Mount Starter)

755-8611

Billet Aluminum Flywheel - Externally Balanced For Gen 4, 5 & 6 Big Block Chevy 502 CID

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

These flywheels have machined retaining recesses every 120 degrees attaching locating tabs that have been installed on the ring gear making rear gear shift and movement a thing of the past. By using a lighter aluminum flywheel you will be rewarded with both faster acceleration and deceleration giving you the edge you're looking for.

  • Billet construction
  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Lightweight yet durable
  • Zero/neutral balance
  • 168 tooth gear
  • Weight: 12 lbs
  • Bottom Mount Starter

External Balance Alum. Flywheel Gen 4,5, & 6 B/B Chevy
Your Price:
$399.99

Billet Aluminum Flywheel - Externally Balanced For Gen 4, 5 & 6 Big Block Chevy 454 CID (Top Mount Starter)

755-8608

External Balance Alum. Flywheel Gen 4,5, & 6 B/B Chevy (Top/Bellhousing Mounted Starter)

These all new billet aluminum 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.

The flywheels have machined retaining recesses every 120 degrees. Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. By using a lighter aluminum flywheel, you will be rewarded with both faster acceleration and deceleration. Giving you the edge you’re looking for.

Billet construction

  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Light weight yet durable
  • Zero/neutral balance • 168 tooth gear
  • Weight: 12lbs

External Balance Alum. Flywheel Gen 4,5, & 6 B/B Chevy
Your Price:
$529.99

Billet Aluminum Flywheel - Externally Balanced For Gen 4, 5 & 6 Big Block Chevy 502 CID (Top Mount Starter)

755-8609

External Balance Alum. Flywheel Gen 4,5, & 6 B/B Chevy 502 CID (Top/Bellhousing Mounted Starter)

These all new billet aluminum 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.

The flywheels have machined retaining recesses every 120 degrees. Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. By using a lighter aluminum flywheel, you will be rewarded with both faster acceleration and deceleration. Giving you the edge you’re looking for.

Billet construction

  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Light weight yet durable
  • Zero/neutral balance • 168 tooth gear
  • Weight: 12lbs

Billet Aluminum Flywheel - Neutral Balance For GM Gen 4 Big Block Chevy
Your Price:
$399.99

Billet Aluminum Flywheel - Internal Balance For Gen 4, 5 & 6 Big Block Chevy (Bottom Mount Starter)

755-8612

Billet Aluminum Flywheel - Neutral Balance For GM Gen 4 Big Block Chevy

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

These flywheels have machined retaining recesses every 120 degrees attaching locating tabs that have been installed on the ring gear making rear gear shift and movement a thing of the past. By using a lighter aluminum flywheel you will be rewarded with both faster acceleration and deceleration giving you the edge you're looking for.

  • Billet construction
  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Works with bottom mount block mounted starters
  • Lightweight yet durable
  • Zero/neutral balance
  • 168 tooth gear
  • Weight: 12 Lbs
  • Bottom Mount Starter

Internal Balance Alum. Flywheel Gen 4,5, & 6 B/B Chevy
Your Price:
$399.99

Billet Aluminum Flywheel - Internal Balanced For Gen 4, 5 & 6 Big Block Chevy (Top Mount Starter)

755-8601

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

These all new billet aluminum 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.

The flywheels have machined retaining recesses every 120 degrees. Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. By using a lighter aluminum flywheel, you will be rewarded with both faster acceleration and deceleration. Giving you the edge you’re looking for.

Billet construction

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

Steel Flywheel - Internal Balance for Gen 4,5 & 6 B/B Chevy (Top Mount Starter)
Your Price:
$399.99

Steel Flywheel - Internal Balance for Gen 4,5 & 6 B/B Chevy (Top Mount Starter)

755-8602

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.

The flywheels have machined retaining recesses every 120 degrees. 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

Steel Flywheel - Internal Balance For Gen 4, 5 and 6 Big Block Chevy (Bottom Mount Starter)
Your Price:
$399.99

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

755-8613

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.

The flywheels have machined retaining recesses every 120 degrees. 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: 28 lbs

Steel Flywheel - External Balance for Gen 4, 5 & 6 Big Block Chevy (Top Mount Starter)
Your Price:
$399.99

Steel Flywheel - External Balance for Gen 4, 5 & 6 Big Block Chevy (Top Mount Starter)

755-8603

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.

The flywheels have machined retaining recesses every 120 degrees. 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
  • Light weight yet durable
  • 168 tooth gear
  • Weight: 28 lbs.

Steel Flywheel - External Balance For Gen 4 Big Block Chevy
Your Price:
$399.99

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

755-8614

Steel Flywheel - External Balance For Gen 4, 5 & 6 Big Block Chevy 454 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.

The flywheels have machined retaining recesses every 120 degrees. 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: 28 lbs

Steel Flywheel - External Balance For Gen 5 & 6 Big Block Chevy
Your Price:
$399.99

Steel Flywheel - External Balance For Gen 4, 5 and 6 Big Block Chevy 502 CID (Bottom Mount Starter)

755-8615

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.

The flywheels have machined retaining recesses every 120 degrees. 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: 28 lbs

Billet Aluminum Flywheel - Internal Balance for Small Block Chevy with 1 pc. Rear Main Seal (Bottom Mount Starter)
Your Price:
$399.99

Billet Aluminum Flywheel - Internal Balance for Small Block Chevy with 1 pc. Rear Main Seal (Bottom Mount Starter)

755-8645

Flywheel Aluminum, SBC 86 And Up (1 piece rear main seal, Bottom Mount Starter / Internal Balance 2.067ID. 14-1/4" 168 tooth flywheel. Weight: 12 lbs


Billet Aluminum Flywheel - Internal Balance for Small Block Chevy with 1 pc. Rear Main Seal (Top Mount Starter)
Your Price:
$399.99

Billet Aluminum Flywheel - Internal Balance for Small Block Chevy with 1 pc. Rear Main Seal (Top Mount Starter)

755-8647

Flywheel Aluminum, SBC 86 And Up (1 piece rear main seal, Top Mount Starter / Internal Balance 2.067ID. 14-1/4" 168 tooth flywheel. Weight: 12 lbs


Hardin Billet Aluminum Flywheel - Internal Balance for GM LS1-LS7 (Bottom Mount Starter)
Your Price:
$399.99

Hardin Billet Aluminum Flywheel - Internal Balance for GM LS1-LS7 (Bottom Mount Starter)

755-8644

Hardin Billet Aluminum Flywheel Internal Balance for GM (LS1-LS7)

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

These precision billet aluminum flywheels deliver all of the strength and reliability that you desire with the light weight and advantages that only aluminum can provide. Lightweight Aluminum alloy flywheels can offer substantial benefits for certain situations such as light weight boats or racing boats that need rapid engine rpms instantaneously. These are recommended as replacements for factory-cast flywheels in high performance and racing applications. They're better for acceleration of heavier race boats. All Hardin flywheels are CNC-machined from certified materials.

  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Light weight yet durable
  • Zero/neutral balance • 168 tooth gear
  • Bottom Mount Starter Flywheel
  • Weight: 12 lbs

Internal Balance Alum. Flywheel Gen 4,5, & 6 B/B Chevy
Your Price:
$325.99

Billet Aluminum Flywheel - Internal Balanced For LS Chevy (Top Mount Starter)

755-8650

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

These all new billet aluminum 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.

The flywheels have machined retaining recesses every 120 degrees. Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. By using a lighter aluminum flywheel, you will be rewarded with both faster acceleration and deceleration. Giving you the edge you’re looking for.

Billet construction

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

Hardin Steel Flywheel - Internal Balance for GM LS1-LS7 (Bottom Mount Starter)
Your Price:
$399.99

Hardin Steel Flywheel - Internal Balance for GM LS1-LS7 (Bottom Mount Starter)

755-8643

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: 28 Lbs

Steel Flywheel - Internal Balance for LS Chevy (Top Mount Starter)
Your Price:
$399.99

Steel Flywheel - Internal Balance for LS Chevy (Top Mount Starter)

755-8649

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.

The flywheels have machined retaining recesses every 120 degrees. 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

TITAN Dampener Plate / Flywheel Combo
Your Price:
$1,790.95

TITAN Dampener Plate / Flywheel Combo

755-8640

TITAN Dampener Plate / 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


168 Tooth Flywheel Ring Gear with Tabs
Your Price:
$120.00

168 Tooth Flywheel Ring Gear with Tabs

755-8600

Replacement 168 tooth ring gear for flywheels.

NOTE: This ring gear is designed to replace broken ring gears on flywheels we offer only. If your are not sure please call us to confirm fit.

ARP BBC Flywheel/Flexplate Bolts
Your Price:
$19.99

ARP BBC Flywheel/Flexplate Bolts

860-200-2802

ARP BBC Flywheel/Flexplate Bolts

  • Chevy 90° V6 & 265-454 with 2-pc Rear Seal
  • Ford 289-460
  • 7/16"-20 x 1.00"

Flywheel and flexplate bolts play an important role in the performance and safety of both street and race cars, which is why the fastener experts at ARP developed bolts far superior to OE hardware. ARP offers two series of flywheel/flexplate bolts: Pro and High-Performance. Forged from aerospace alloy and heat-treated prior to thread rolling and machining, both series feature a flat 12-point head design and larger-than-stock shank for improved strength and flywheel register. The premium grade Pro Series has a 190,000 psi rating (originally developed for NASCAR Winston Cup competition), and the popular High-Performance Series has a 170,000 psi rating.