Flywheels, Flexplates & Drive 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.

Hardin Billet Aluminum Flywheel GM (LS1-LS7)
Your Price:
$325.99

Hardin Billet Aluminum Flywheel GM (LS1-LS7)

137-8644

Hardin Billet Aluminum Flywheel 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

168 Tooth Flywheel Ring Gear with Tabs
Your Price:
$119.99

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.

Billet Aluminum Flywheel - Externally Balanced For Gen 4 Big Block Chevy
Your Price:
$459.99

Billet Aluminum Flywheel - Externally Balanced For Gen 4 Big Block Chevy

755-8610

Billet Aluminum Flywheel - Externally Balanced For 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
  • Lightweight yet durable
  • Zero/neutral balance
  • 168 tooth gear

Billet Aluminum Flywheel - Neutral Balance For GM Gen 4 Big Block Chevy
Your Price:
$459.99

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

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

Steel Flywheel - External Balance For Gen 4 Big Block Chevy
Your Price:
$429.99

Billet Steel Flywheel - External Balance For Gen 4, Big Block Chevy (bottom mount starter)

755-8614

Billet Steel Flywheel - External Balance For Gen 4, 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.

  • Billet steel construction
  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Light weight yet durable
  • 168 tooth gear

Steel Flywheel - External Balance For Gen 5 & 6 Big Block Chevy
Your Price:
$429.99

Billet Steel Flywheel - External Balance For Gen 5 and 6 Big Block Chevy (bottom mount starter)

755-8615

Billet Steel Flywheel - External Balance For Gen 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.

  • Billet steel construction
  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Light weight yet durable
  • 168 tooth gear

Steel Flywheel - Internal Balance For Gen 4 Big Block Chevy
Your Price:
$429.99

Billet Steel Flywheel - Internal Balance For Gen 4, 5 and 6 Big Block Chevy (bottom mount starter)

755-8613

Billet 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.

  • Billet steel construction
  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Light weight yet durable
  • 168 tooth gear

External Balance Alum. Flywheel Gen 4,5, & 6 B/B Chevy
Your Price:
$459.99

External Balance Alum. Flywheel Gen 4,5, & 6 B/B Chevy

755-8608

External Balance Alum. Flywheel Gen 4,5, & 6 B/B Chevy (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

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

External Balance Steel Flywheel Gen 4,5 & 6 B/B Chevy

755-8603

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

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

Hardin Steel Billet Flywheel GM (LS1-LS7)
Your Price:
$295.99

Hardin Steel Billet Flywheel GM (LS1-LS7)

137-8643

Hardin Steel Billet Flywheel GM (LS1-LS7)

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

These precision billet 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) Billet 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
  • Light weight yet durable
  • Zero/neutral balance • 168 tooth gear

Internal Balance Alum. Flywheel Gen 4,5, & 6 B/B Chevy
Your Price:
$459.99

Internal Balance Alum. Flywheel Gen 4,5, & 6 B/B Chevy

755-8601

Internal Balance Alum. Flywheel Gen 4,5, & 6 B/B Chevy (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

Internal Balance Steel Flywheel Gen 4,5 & 6 B/B Chevy
Your Price:
$395.99

Internal Balance Steel Flywheel Gen 4,5 & 6 B/B Chevy

755-8602

Internal Balance Steel Flywheel Gen 4,5 & 6 B/B Chevy (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 100 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


ARP Pressure Plate Bolts – Chevy
Your Price:
$29.99

ARP Pressure Plate Bolts – Chevy

860-230-2202

ARP Pressure Plate Bolts – Chevy

  • 3/8"-16
  • Chevy 265-502 V8

Engineered for your special application, ARP pressure plate bolt kits are the finest available and feature a large diameter, low profile head. Includes hardened washers. ARP High Performance Series bolts are made from a premium grade chrome moly and hardened to a nominal tensile strength of 180,000 psi. The Pro Series bolts, originally developed for NASCAR competition, are stronger and rated at 200,000 psi. 6/pkg.