Harmonic Balancers
Circle Track Harmonic Balancers at JJ Motorsports
Reduce crankshaft vibrations and protect your engine from excessive wear with high-performance harmonic balancers from JJ Motorsports. Designed for demanding circle track racing, these balancers ensure smooth operation and longevity under high-RPM conditions, ideal for IMCA, USMTS, late models, modifieds, and street stocks, available in SFI-certified options for internal and external balance on SBC, SBF, and GM LS engines.
Shop trusted brands like Pioneer for SFI-rated dampers, KRC Power Steering for R-Lok adapters, and Blueprint Engines for external balance balancers. Explore related categories such as Harmonic Balancers and Components for additional parts or Crankshafts and Components for engine upgrades.
Top Circle Track Harmonic Balancers
- Harmonic Damper SFI SBF 302/351W Int. Balance 872034 – Harmonic Balancer 6.370 in OD Steel Internal Balance Ford Small Block.
- KRC Adapter Pro R-Lok SBC KRC 38140500 – Crankshaft Hub R-Lok 1.245 in Long Hardware Included Black Anodized Each.
- SBC Balancer 8in OD 400 External Balance BPP400L – Harmonic Balancer 8.000 in OD Steel Black Zinc External Balance Each.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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ATI SBC 7in Harmonic Damper SFI 917780
ATI PERFORMANCE
$381.99Harmonic vibration can destroy your Small Block Chevy engine from the inside out—metal fatigue, bearing wear, and catastrophic failure happen silently until it's too late. The ATI SBC 7in Harmonic Damper SFI 917780 absorbs these destructive oscillations...ATI917780- SKU:
- ATI917780
- Availability:
- Ships Same Business Day
- Weight:
- 11.14 LBS
- MFG Part #:
- 917780
$381.99 -
ATI GM LS1 6.32 Harmonic Damper - SFI 917776
ATI PERFORMANCE
$378.99The ATI GM LS1 6.32 Harmonic Damper is essential for LS-series engines running high RPM or forced induction applications. Uncontrolled crankshaft harmonics can cause catastrophic failure—this damper absorbs those destructive vibrations and protects your...ATI917776- SKU:
- ATI917776
- Availability:
- Ships Same Business Day
- Weight:
- 9.82 LBS
- MFG Part #:
- 917776
$378.99 -
ATI SBF 6.325 Harmonic Damper - SFI 917511
ATI PERFORMANCE
$381.99Harmonic imbalance causes accelerated crankshaft wear and vibration-induced failures—especially critical in high-RPM and forced-induction Small Block Ford applications. The ATI SBF 6.325 Super Damper isolates destructive harmonic frequencies before they...ATI917511- SKU:
- ATI917511
- Availability:
- Ships Same Business Day
- Weight:
- 9.77 LBS
- MFG Part #:
- 917511
$381.99 -
ATI SBC 6.325 Harmonic Damper - SFI 917480
ATI PERFORMANCE
$423.99A quality harmonic damper is essential for protecting your Small Block Chevy engine from destructive vibration that can compromise reliability and power delivery. The ATI SBC 6.325 Super Damper uses advanced elastomer technology to absorb crankshaft...ATI917480- SKU:
- ATI917480
- Availability:
- Ships Same Business Day
- Weight:
- 6.24 LBS
- MFG Part #:
- 917480
$423.99 -
ATI SBC 6.325 Harmonic Damper - SFI 917411
ATI PERFORMANCE
$383.99Harmonic dampers are critical to engine longevity—they absorb crankshaft vibrations that can lead to premature wear, bearing damage, and catastrophic failure. The ATI SBC 6.325 Super Damper delivers precision dampening with SFI 18.1 certification, making...ATI917411- SKU:
- ATI917411
- Availability:
- Ships Same Business Day
- Weight:
- 7.94 LBS
- MFG Part #:
- 917411
$383.99 -
ATI SBC/Pont 6.325 Damper SFI-ASA Spec 917410
ATI PERFORMANCE
$393.99Harmonic dampers are critical for engine longevity, and this ATI Super Damper delivers precision vibration control that protects your crankshaft from destructive harmonics. Whether you're running a stock rebuild or a high-revving performance build,...ATI917410- SKU:
- ATI917410
- Availability:
- Ships Same Business Day
- Weight:
- 7.92 LBS
- MFG Part #:
- 917410
$393.99 -
ATI GM LS1 7.074 Harmonic Damper - SFI 917211
ATI PERFORMANCE
$423.99The harmonic damper is critical to LS1 engine reliability—it absorbs destructive crankshaft vibrations that can lead to premature bearing wear and catastrophic failure. ATI's Super Damper technology provides superior vibration isolation compared to OEM...ATI917211- SKU:
- ATI917211
- Availability:
- Ships Same Business Day
- Weight:
- 10.03 LBS
- MFG Part #:
- 917211
$423.99 -
Allstar Performance SBC Crank Hub ALL90030
ALLSTAR PERFORMANCE
$209.99A quality crank hub is fundamental to reliable crankshaft operation and proper accessory drive functionality. The Allstar Performance SBC Crank Hub delivers precise fitment and durability for Small Block Chevy engines, whether you're building a street...ALL90030- SKU:
- ALL90030
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- MFG Part #:
- ALL90030
$209.99 -
SBC 5.7in Steel Harmonic Balancer - SFI CH-IBS-6-C
BHJ DAMPERS
$469.99Harmonic balancers are critical to engine longevity—they absorb destructive vibrations that can crack cranks and damage bearings over time. This SBC balancer combines a steel construction with SFI 18.1 certification, ensuring reliable performance whether...BHJCH-IBS-6-C- SKU:
- BHJCH-IBS-6-C
- Availability:
- Ships Same Business Day
- Weight:
- 4.60 LBS
- MFG Part #:
- CH-IBS-6-C
$469.99Qty in Cart: 0Quantity:Price:$469.99Subtotal: -
SBC 5.7in Steel Harmonic Balancer - SFI CH-IBS-6
BHJ DAMPERS
$469.99A properly balanced harmonic balancer is critical for engine longevity and performance—vibration damping directly impacts crankshaft integrity and bearing wear. This SBC balancer meets SFI 18.1 certification for reliability in high-RPM and...BHJCH-IBS-6- SKU:
- BHJCH-IBS-6
- Availability:
- Ships Same Business Day
- Weight:
- 5.89 LBS
- MFG Part #:
- CH-IBS-6
$469.99Qty in Cart: 0Quantity:Price:$469.99Subtotal: -
SBC 6.1in Steel Harmonic Balancer - Non SFI CH-IB-221
BHJ DAMPERS
$233.99A harmonic balancer is critical to engine longevity—it absorbs destructive crankshaft vibrations that can lead to premature bearing wear, seal failure, and catastrophic engine damage. This SBC 6.1-inch steel balancer maintains precise damping...BHJCH-IB-221- SKU:
- BHJCH-IB-221
- Availability:
- Ships Same Business Day
- Weight:
- 7.44 LBS
- MFG Part #:
- CH-IB-221
$233.99Qty in Cart: 0Quantity:Price:$233.99Subtotal:
