Best External Balances

Are you looking for the best external balance flexplates to keep your engine running smoothly? This guide offers top-quality options that fit perfectly and enhance your driving experience.

When it comes to external balance flexplates, choosing the right one is key. These parts keep your engine running smooth and strong.

You want a flexplate that fits perfectly. It must be tough and reliable. It should match your engine’s balance type.

Many users find the right flexplate changes their driving experience. It feels smoother and more responsive. You can trust this guide to help you pick the best external balance flexplate for your needs.

List of Top 10 External Balances

Image Title Best For Price
Speedway Motors 168 Tooth Flexplate for 1986-1997 SBC with 1-Piece Rear Main Seal, External Balance Replacement for 305/350 Engines, Ideal for Engine or Transmission Installs Speedway Motors 168 Tooth Flexplate for 1986-1997 SBC with 1-Piece Rear Main Seal, External Balance Replacement for 305/350 Engines, Ideal for Engine or Transmission Installs

This flexplate is perfect for car owners and mechanics working on 1986-1997 Small Block Chevy engines. It is great for anyone who needs a strong, reliable part when putting in a new engine or transmission. If you want a direct-fit, long-lasting flexplate that matches your V8 setup, this is made for you.

View on Amazon (paid link)
Allstar Performance ALL26801 SBC 168T SFI 29.1 External Balance Flexplate Allstar Performance ALL26801 SBC 168T SFI 29.1 External Balance Flexplate

This Allstar Performance Flexplate is perfect for car enthusiasts who want reliable auto parts. It’s ideal for upgrading your vehicle with quality and precision.

View on Amazon (paid link)
Allstar Performance ALL26806 168T Standard External Balance Flexplate for Small Block Chevy Allstar Performance ALL26806 168T Standard External Balance Flexplate for Small Block Chevy

This flexplate is perfect for Small Block Chevy engines needing a standard external balance setup. Mechanics, car enthusiasts, and DIYers will love its strong build and reliable performance for auto repair or upgrades.

View on Amazon (paid link)
Speedway Motors 153 Tooth Flexplate External Balance Compatible with 1986–1997 Chevy Small Block 4.3 305 350 Engines 1 Piece Rear Main Seal Steel Design Speedway Motors 153 Tooth Flexplate External Balance Compatible with 1986–1997 Chevy Small Block 4.3 305 350 Engines 1 Piece Rear Main Seal Steel Design

This flexplate is perfect for Chevy owners rebuilding 1986–1997 4.3L, 305, or 350 engines needing an external balance design. It suits DIY mechanics and pros upgrading or fixing engines with a 1-piece rear main seal. The 153-tooth ring gear ensures smooth starter engagement, while durable steel and a secure bolt pattern guarantee reliable performance.

View on Amazon (paid link)
Speedmaster PCE226.1003 Compatible with Chevy SBC 383 400 2Pc Rms 168 Tooth 11 Speedmaster PCE226.1003 Compatible with Chevy SBC 383 400 2Pc Rms 168 Tooth 11″ External Balance Heavy Duty Flexplate

This heavy-duty flexplate is perfect for Chevy SBC 383 and 400 engine owners looking for a track-proven and innovative upgrade. It’s built to last through all your adventures, with a 12-month warranty for peace of mind.

View on Amazon (paid link)
HQPASFY 1845400 Flexplate, External Balance 168 Teeth and Bolts Kit, Chromoly Steel, Compatible with 1970-1990 Big Block Chevy 454 Engine Corvette/Caprice/Suburban/Silverado &More HQPASFY 1845400 Flexplate, External Balance 168 Teeth and Bolts Kit, Chromoly Steel, Compatible with 1970-1990 Big Block Chevy 454 Engine Corvette/Caprice/Suburban/Silverado &More

This HQPASFY 1845400 Flexplate is perfect for car enthusiasts and mechanics who need a reliable and durable replacement for their 1970-1990 Big Block Chevy 454 Engine. It’s ideal for Corvette, Caprice, Suburban, Silverado, and more, offering a hassle-free install and long-lasting performance.

View on Amazon (paid link)
Powerbond Balancers Harmonic Balancer, Claimer, 7.990 in OD, Steel, Black Paint, External Balance, Big Block Chevy, Each Powerbond Balancers Harmonic Balancer, Claimer, 7.990 in OD, Steel, Black Paint, External Balance, Big Block Chevy, Each

This product is perfect for Big Block Chevy owners or mechanics needing a durable, precise harmonic balancer. Its steel construction and external balance design ensure smooth, stable power for high-performance engines.

View on Amazon (paid link)
TCI 399773 Chevrolet 1-Piece Rear Main SBC ('86-'99) ; External Balance; Dual Bolt Pattern TCI 399773 Chevrolet 1-Piece Rear Main SBC (’86-’99) ; External Balance; Dual Bolt Pattern

This flexplate is perfect for Small Block Chevy mechanics and enthusiasts needing a vehicle-specific replacement. It suits engines from 1986-1999 with external balance and dual bolt patterns. Built for precision and durability, it meets SFI 29.1 safety standards.

View on Amazon (paid link)
Scat Enterprises Crankshaft, Pro Stock 9000 Series, 3.750 in Stroke, External Balance, Cast Iron, 2-Piece Seal, Small Block Chevy, Each Scat Enterprises Crankshaft, Pro Stock 9000 Series, 3.750 in Stroke, External Balance, Cast Iron, 2-Piece Seal, Small Block Chevy, Each

This Scat Enterprises Crankshaft is perfect for car enthusiasts and professional builders who want to boost their Small Block Chevy’s performance. It fits those who need a durable, high-quality crankshaft with a 3.750-inch stroke and external balance. If you want a reliable part that handles power and lasts long, this is the smart choice for your engine build.

View on Amazon (paid link)
Allstar Performance ALL26820 168T 454 SFI External Balance Flexplate Allstar Performance ALL26820 168T 454 SFI External Balance Flexplate

This Allstar Performance ALL26820 168T 454 SFI External Balance Flexplate is perfect for anyone who wants a strong and reliable part for their engine. It fits well for those who need an externally balanced flexplate made in the United States and want a lightweight but durable solution.

View on Amazon (paid link)

Detailed Reviews

Discover the best external balances chosen from expert reviews and real user feedback. This guide offers clear insights to help you pick the perfect fit for your needs. Trust us to deliver the top options for quality, performance, and value.

1. Speedway Motors 168 Tooth Flexplate for 1986-1997 SBC with 1-Piece Rear Main Seal, External Balance Replacement for 305/350 Engines, Ideal for Engine or Transmission Installs

Speedway Motors 168 Tooth Flexplate for 1986-1997 SBC with 1-Piece Rear Main Seal, External Balance Replacement for 305/350 Engines, Ideal for Engine or Transmission Installs

The Speedway Motors 168 Tooth Flexplate is a perfect fit for 1986-1997 Small Block Chevy engines. It works with externally balanced 305 and 350 V8s using a 1-piece rear main seal. This flexplate ensures a smooth, reliable connection for your engine or transmission install.

It is built with a strong 168-tooth design for durability. The flexplate is made to last in both street and performance setups.

This flexplate matches the original equipment style for external balance configurations. It is the ideal replacement for keeping your engine running right. Install it anytime you swap an engine or transmission for the best results.

Pros Cons
  • Direct-fit design ensures seamless compatibility with 1986–1997 SBC Chevy V8 engines.
  • Reliable 168-tooth setup guarantees smooth transmission engagement for 305/350 engines.
  • Durable non-SFI build offers long-lasting performance for daily driving or racing.
  • Perfect for engine/transmission upgrades to ensure proper alignment and function.
  • External balance design matches factory specs for precise fitment and reliability.
  • Not SFI Certified; may limit use in professional racing.
  • Fits only specific Chevy V8s from ’86 to ’97.
  • Designed for external balance engines only, not universal.

Perfect For:

This flexplate is perfect for car owners and mechanics working on 1986-1997 Small Block Chevy engines. It is great for anyone who needs a strong, reliable part when putting in a new engine or transmission. If you want a direct-fit, long-lasting flexplate that matches your V8 setup, this is made for you.

Ready to Purchase?

2. Allstar Performance ALL26801 SBC 168T SFI 29.1 External Balance Flexplate

Allstar Performance ALL26801 SBC 168T SFI 29.1 External Balance Flexplate

The Allstar Performance ALL26801 is a high-quality auto part. It’s designed for SBC 168T engines. This flexplate meets SFI 29.1 safety standards.

It features an external balance design. The package dimensions are 35.814 cm L x 36.83 cm W x 3.048 cm H. It weighs 5.16 lbs, making it easy to handle.

This product is made in the United States. It’s a reliable choice for your vehicle.

Pros Cons
  • Made in USA with top-notch quality for reliable performance.
  • Perfect fit for SBC engines, ensuring smooth operation.
  • Lightweight design at 5.16 lbs for efficient power transfer.
  • Compact packaging for easy handling and safe delivery.
  • Heavy weight may affect vehicle balance
  • Large size might not fit all engines
  • Made only in the United States (limited availability)

Perfect For:

This Allstar Performance Flexplate is perfect for car enthusiasts who want reliable auto parts. It’s ideal for upgrading your vehicle with quality and precision.

Ready to Purchase?

3. Allstar Performance ALL26806 168T Standard External Balance Flexplate for Small Block Chevy

Allstar Performance ALL26806 168T Standard External Balance Flexplate for Small Block Chevy

The Allstar Performance ALL26806 is a reliable flexplate for your car. It fits Small Block Chevy engines perfectly.

This part is made in the United States. It weighs 5.45 pounds and measures 36 cm by 36.8 cm by 2.8 cm.

It’s a standard external balance design. This auto part ensures smooth engine performance.

Pros Cons
  • Made in USA, ensuring top quality and reliability.
  • Perfect fit for Small Block Chevy engines.
  • Lightweight design at just 5.45 lbs for better performance.
  • Compact packaging for easy handling and storage.
  • Heavy at 5.45 lbs, may add extra weight to your vehicle.
  • Large size (36 cm x 36 cm) could be bulky for tight spaces.
  • Specific fit for Small Block Chevy, limits compatibility with other engines.

Perfect For:

This flexplate is perfect for Small Block Chevy engines needing a standard external balance setup. Mechanics, car enthusiasts, and DIYers will love its strong build and reliable performance for auto repair or upgrades.

Ready to Purchase?

4. Speedway Motors 153 Tooth Flexplate External Balance Compatible with 1986–1997 Chevy Small Block 4.3 305 350 Engines 1 Piece Rear Main Seal Steel Design

Speedway Motors 153 Tooth Flexplate External Balance Compatible with 1986–1997 Chevy Small Block 4.3 305 350 Engines 1 Piece Rear Main Seal Steel Design

This Speedway Motors 153 Tooth Flexplate works with 1986–1997 Chevy small block engines. It fits 4.3L, 305, and 350 models with a 1-piece rear main seal and external balance design.

The 153-tooth ring gear ensures smooth starter engagement. It uses a 3 on 10-3/4 inch bolt pattern for secure torque converter mounting. The steel construction offers durability for engine or transmission swaps.

External balance design matches 1986–1997 V8 needs. Precise bolt spacing prevents installation errors. Steel material resists wear for long-term use.

Pros Cons
  • Perfect fit for many Chevy engines.
  • Reliable steel for lasting performance.
  • Ensures smooth starts with 153 teeth.
  • Balances your engine perfectly.
  • Easy, secure installation guaranteed.
  • Limited Compatibility – Only fits externally balanced Chevy V8 engines.
  • Potential Starter Compatibility Issues – Requires matching starter gear.
  • Susceptible to Rust Over Time – Steel material may corrode without maintenance.

Perfect For:

This flexplate is perfect for Chevy owners rebuilding 1986–1997 4.3L, 305, or 350 engines needing an external balance design. It suits DIY mechanics and pros upgrading or fixing engines with a 1-piece rear main seal. The 153-tooth ring gear ensures smooth starter engagement, while durable steel and a secure bolt pattern guarantee reliable performance.

Ready to Purchase?

5. Speedmaster PCE226.1003 Compatible with Chevy SBC 383 400 2Pc Rms 168 Tooth 11″ External Balance Heavy Duty Flexplate

Speedmaster PCE226.1003 Compatible with Chevy SBC 383 400 2Pc Rms 168 Tooth 11

The Speedmaster PCE226.1003 flexplate is designed for Chevy SBC 383 and 400 engines. It features a 2-piece RMS and 168-tooth design for a perfect fit.

This product is built with old and new technology in mind. It is created to withstand road, race, and recreational use. It is track proven for long-lasting durability.

The 12-month worldwide warranty backs its performance. You can trust this flexplate for its reliability. It is a heavy-duty flexplate that ensures your engine stays balanced.

Pros Cons
  • Durable 226 Flexplate built for heavy-duty use
  • Combines old and new tech for superior performance
  • Tested on tracks for proven long-lasting quality
  • Backed by 12-month warranty worldwide coverage
  • Designed for Chevy SBC 383 400 perfect fit guarantee
  • Compatibility limited to specific Chevy models only.
  • Installation complexity for inexperienced mechanics.
  • Limited warranty coverage in remote areas.

Perfect For:

This heavy-duty flexplate is perfect for Chevy SBC 383 and 400 engine owners looking for a track-proven and innovative upgrade. It’s built to last through all your adventures, with a 12-month warranty for peace of mind.

Ready to Purchase?

6. HQPASFY 1845400 Flexplate, External Balance 168 Teeth and Bolts Kit, Chromoly Steel, Compatible with 1970-1990 Big Block Chevy 454 Engine Corvette/Caprice/Suburban/Silverado &More

HQPASFY 1845400 Flexplate, External Balance 168 Teeth and Bolts Kit, Chromoly Steel, Compatible with 1970-1990 Big Block Chevy 454 Engine Corvette/Caprice/Suburban/Silverado &More

This HQPASFY 1845400 flexplate fits 1970–1990 Big Block Chevy 454 engines. It works with Corvettes, Caprices, Suburbans, and Silverados. The external balance design ensures OEM fit with included bolts.

Built from chromoly steel, it resists wear and fatigue better than standard plates. Reinforced design reduces flexing for smoother torque converter engagement. Each plate is dynamically balanced to cut vibration at all RPMs.

Corrosion-resistant finish and strong ring gear welding boost durability. The 24-month warranty covers defects and quality issues. Contact the brand for support or replacements.

Pros Cons
  • Perfect fit for 1970-1990 Big Block Chevy engines.
  • Stronger chromoly steel ensures durability and smooth engagement.
  • Dynamically balanced for stable, vibration-free performance.
  • Corrosion-resistant with reinforced welding for longevity.
  • 24-month warranty guarantees peace of mind.
  • Not for newer engines.
  • Only for specific Big Block Chevy.

Perfect For:

This HQPASFY 1845400 Flexplate is perfect for car enthusiasts and mechanics who need a reliable and durable replacement for their 1970-1990 Big Block Chevy 454 Engine. It’s ideal for Corvette, Caprice, Suburban, Silverado, and more, offering a hassle-free install and long-lasting performance.

Ready to Purchase?

7. Powerbond Balancers Harmonic Balancer, Claimer, 7.990 in OD, Steel, Black Paint, External Balance, Big Block Chevy, Each

Powerbond Balancers Harmonic Balancer, Claimer, 7.990 in OD, Steel, Black Paint, External Balance, Big Block Chevy, Each

The Powerbond Balancers Harmonic Balancer is built tough. It is made of strong steel with a sleek black paint finish. This part fits Big Block Chevy engines perfectly.

It measures 7.990 inches in outside diameter. It is designed for external balance applications.

The package weighs about 15 pounds. Its size is easy to handle with a length of 9.62 inches.

Pros Cons
  • Strong steel build ensures long-lasting performance.
  • Designed for Big Block Chevy engines with perfect fit.
  • Black paint finish resists rust and looks sharp.
  • External balance design offers smooth engine operation.
  • Compact size with easy installation and handling.
  • Heavy for its size, impacting shipping costs.
  • Specific fit for Big Block Chevy engines.
  • External balance might not suit all setups.

Perfect For:

This product is perfect for Big Block Chevy owners or mechanics needing a durable, precise harmonic balancer. Its steel construction and external balance design ensure smooth, stable power for high-performance engines.

Ready to Purchase?

8. TCI 399773 Chevrolet 1-Piece Rear Main SBC (’86-’99) ; External Balance; Dual Bolt Pattern

TCI 399773 Chevrolet 1-Piece Rear Main SBC ('86-'99) ; External Balance; Dual Bolt Pattern

Upgrade your Chevrolet with this high-quality TCI flexplate. It’s designed for SBC engines from ’86 to ’99. Get reliable performance for your ride.

This 1-piece rear main flexplate is built for external balance. It features a dual bolt pattern for easy installation. Enjoy a perfect fit with its vehicle-specific design.

It’s a durable part that weighs 3.379 kilograms. Make your engine run smoothly.

Pros Cons
  • Fits perfectly with Chevrolet 1-piece rear main SBC (’86-’99).
  • Dual bolt pattern ensures easy and secure installation.
  • Made with high-quality materials for long-lasting durability.
  • Lightweight design boosts performance without added bulk.
  • Comes with precise vehicle-specific fit for hassle-free use.
  • Limited fit: Only for ’86-’99 Chevrolet SBC models.
  • Weight: Heavier than some aftermarket alternatives.
  • Size: Bulkier dimensions may require extra space.

Perfect For:

This flexplate is perfect for Small Block Chevy mechanics and enthusiasts needing a vehicle-specific replacement. It suits engines from 1986-1999 with external balance and dual bolt patterns. Built for precision and durability, it meets SFI 29.1 safety standards.

Ready to Purchase?

9. Scat Enterprises Crankshaft, Pro Stock 9000 Series, 3.750 in Stroke, External Balance, Cast Iron, 2-Piece Seal, Small Block Chevy, Each

Scat Enterprises Crankshaft, Pro Stock 9000 Series, 3.750 in Stroke, External Balance, Cast Iron, 2-Piece Seal, Small Block Chevy, Each

The Scat Enterprises Crankshaft is a high-performance auto part designed for small block Chevy engines. It’s part of the Pro Stock 9000 Series, built for reliability and power.

This crankshaft has a 3.750-inch stroke and external balance, perfect for racing or high-performance builds. It’s made from durable cast iron and features a 2-piece seal for added strength.

The package measures 9.24 inches high, 24.79 inches long, and 11.02 inches wide. It’s a single unit, ready to upgrade your engine with top-quality performance.

Pros Cons
  • Strong cast iron ensures long-lasting durability
  • Perfect fit for Small Block Chevy engines
  • Smooth 3.750 in stroke boosts engine performance
  • External balance offers better engine stability
  • Easy 2-piece seal for quick installation
  • Cast iron may crack under extreme stress.
  • External balance adds complexity to installation.
  • 2-piece seal risks oil leaks over time.

Perfect For:

This Scat Enterprises Crankshaft is perfect for car enthusiasts and professional builders who want to boost their Small Block Chevy’s performance. It fits those who need a durable, high-quality crankshaft with a 3.750-inch stroke and external balance. If you want a reliable part that handles power and lasts long, this is the smart choice for your engine build.

Ready to Purchase?

10. Allstar Performance ALL26820 168T 454 SFI External Balance Flexplate

Allstar Performance ALL26820 168T 454 SFI External Balance Flexplate

The Allstar Performance ALL26820 flexplate is made for power. It has a strong 168 teeth count. This part fits perfectly with your engine needs.

It is externally balanced for smooth operation. The flexplate weighs just under 7 pounds, making it light yet durable.

Made in the United States, it meets high-quality standards. The package size is easy to handle at just over 36 centimetres long and wide.

Pros Cons
  • Built tough in the USA.
  • Perfect balance for your engine.
  • Strong and reliable for performance.
  • Easy to install for quick upgrades.
  • Heavy weight might slow down your engine response.
  • Limited to external balance engines only.
  • Large size may not fit smaller setups easily.

Perfect For:

This Allstar Performance ALL26820 168T 454 SFI External Balance Flexplate is perfect for anyone who wants a strong and reliable part for their engine. It fits well for those who need an externally balanced flexplate made in the United States and want a lightweight but durable solution.

Ready to Purchase?

Buying Guide

Choosing the right external balance flexplate is crucial for engine performance. It ensures a smooth and powerful ride.

Here’s how to pick the best one for your needs:

  • Engine Compatibility: Make sure the flexplate matches your specific engine model. This includes checking the number of teeth on the ring gear and the engine’s balance type. A proper fit prevents issues and ensures optimal function.

  • Material and Durability: Look for flexplates made from strong materials like chromoly steel. These are built to last and can handle the demands of your engine. A durable flexplate means fewer worries and more reliable performance.

  • SFI Certification: For safety, choose a flexplate that is SFI certified. This means it has met strict safety standards for high-performance applications. It’s a key indicator of quality and reliability.

  • Balance Type: Confirm the flexplate is designed for external balance. This is critical for engines that require it to run smoothly. Using the wrong balance type can lead to vibrations and damage.

  • Tooth Count: The number of teeth on the flexplate affects how your starter engages. Common counts are 168 or 153 teeth. Ensure it matches your starter and flywheel.

  • Rear Main Seal Type: Pay attention to whether your engine uses a 1-piece or 2-piece rear main seal. The flexplate must be designed to work with your specific seal type. This ensures a proper seal and prevents leaks.

  • Brand Reputation: Opt for reputable brands known for quality automotive parts. Brands like Speedway Motors, Allstar Performance, and TCI have a track record of producing reliable components.

  • Warranty: A good warranty offers peace of mind. It shows the manufacturer stands behind their product. Check the warranty period and what it covers before buying.

  • Ease of Installation: Some flexplates feature a dual bolt pattern, making installation easier. This can save you time and effort during your engine or transmission project.

  • Weight and Dimensions: While less critical, the weight and dimensions can be a factor, especially for custom builds. Ensure the flexplate fits within your engine bay and meets any weight requirements.

Happy motoring!