Rotating Assembly
Circle Track Rotating Assembly at JJ Motorsports
Rotating assemblies deliver a comprehensive solution for building a balanced and durable bottom end. These pre-configured kits are optimized for reliability and power in circle track scenarios. Pair them with other engine-building components for a dominant performance on the track.
Shop trusted brands like Eagle for forged and cast options. Explore related categories such as Circle Track Crankshafts for rotational balance or Circle Track Connecting Rods for durable connections.
Top Circle Track Rotating Assembly
- Eagle SBC Balanced Rotating Assembly - 383 .030 KITB15454E030 – Rotating Assembly, 383 CID, Cast Crank, Hypereutectic Pistons, 3.750 in Stroke, 5.700 in I-Beam Rods, Small Block Chevy Kit.
- Eagle SBC Street Perf Engine Assembly Balanced KITB15405E060 – Rotating Assembly, 388 CID, Cast Crank, Hypereutectic Pistons, 3.750 in Stroke, 5.700 in I Beam Rods, Small Block Chevy Kit.
- Eagle SBC Balanced Rotating Assembly Kit KITB15402E040 – Rotating Assembly, Street / Strip, 357 CID, Cast Crank, Hypereutectic Pistons, 4.040 in Bore, 5.700 in I Beam Rods, Small Block Chevy Kit.
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
-
Eagle SBC Rotating Assembly Kit - Competition 12001040
EAGLE
$2,549.99The Eagle SBC Rotating Assembly Kit delivers the precision engineering and durability required for serious small-block Chevy competition builds. Forged internals throughout this 355 CID package...EAG12001040- SKU:
- EAG12001040
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12001040
$2,549.99 -
Eagle SBC Rotating Assembly Kit - Competition 12001030
EAGLE
$2,684.99A competition-grade rotating assembly is the foundation of reliable, high-output power. The Eagle SBC 12001030 pairs forged internals with proven Small Block Chevy geometry to deliver consistent...EAG12001030- SKU:
- EAG12001030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12001030
$2,684.99 -
Eagle SBF 208/302 Rotating Assembly KIT14006030
EAGLE
$2,680.99A rotating assembly is the heart of your engine's power delivery—and a forged crank and pistons are non-negotiable if you're pushing serious horsepower or planning extended high-RPM operation. The...EAG14006030- SKU:
- EAG14006030
- Availability:
- Ships Same Business Day
- Weight:
- 85.00 LBS
$2,680.99 -
Eagle SBC Balanced Rotating Assembly Kit B13057E030
EAGLE
$1,769.99Building a 383 Small Block that can handle both street driving and strip duty demands a rotating assembly you can trust. This Eagle kit delivers a factory-balanced combination of cast crank, forged...EAGB13057E030- SKU:
- EAGB13057E030
- Availability:
- Ships Same Business Day
- Weight:
- 105.00 LBS
$1,769.99Qty in Cart: 0Quantity:Price:$1,769.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Competition 12504040
EAGLE
$2,610.99If you're building or rebuilding a Small Block Chevy for serious track duty, a quality rotating assembly is non-negotiable—it's the foundation that determines whether your engine survives peak boost...EAG12504040- SKU:
- EAG12504040
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12504040
$2,610.99 -
Eagle SBC Rotating Assembly Kit - Competition 12504030
EAGLE
$2,735.99If you're building a serious Small Block Chevy engine for the track, you need a rotating assembly engineered to handle sustained high RPM abuse without compromise. The Eagle SBC Competition Kit...EAG12504030- SKU:
- EAG12504030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12504030
$2,735.99Qty in Cart: 0Quantity:Price:$2,735.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Competition 12503040
EAGLE
$2,510.99Building a competition small block that can handle sustained RPMs and peak power demands requires a rotating assembly engineered for reliability under extreme conditions. The Eagle SBC Competition...EAG12503040- SKU:
- EAG12503040
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12503040
$2,510.99 -
Eagle SBC Rotating Assembly Kit - Competition 12503030
EAGLE
$2,329.99Building a competition-ready Small Block Chevy demands a rotating assembly engineered for both maximum output and long-term reliability under extreme loads. The Eagle SBC Rotating Assembly Kit...EAG12503030- SKU:
- EAG12503030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12503030
$2,329.99 -
Eagle SBC Rotating Assembly Kit - Competition 12501030
EAGLE
$2,566.99When you're building a competition small block, your rotating assembly is the foundation of reliability and power delivery. The Eagle SBC Rotating Assembly Kit delivers forged internals engineered to...EAG12501030- SKU:
- EAG12501030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12501030
$2,566.99 -
Eagle SBC Rotating Assembly Kit - Competition 12020030
EAGLE
$2,636.99When you're building a competition-grade Small Block Chevy engine, every component in your rotating assembly directly impacts power delivery, reliability, and repeatability on the track. The Eagle...EAG12020030- SKU:
- EAG12020030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12020030
$2,636.99Qty in Cart: 0Quantity:Price:$2,636.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Competition 12012060
EAGLE
$2,447.99Building a 383 cubic inch Small Block Chevy engine demands a rotating assembly engineered for sustained high RPM performance and reliability. The Eagle SBC Rotating Assembly Kit delivers forged...EAG12012060- SKU:
- EAG12012060
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12012060
$2,447.99Qty in Cart: 0Quantity:Price:$2,447.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Competition 12012040
EAGLE
$2,779.99A competition-grade rotating assembly is the foundation of any serious small-block build—and this Eagle kit delivers the durability and precision needed to handle sustained high RPM and boost. With...EAG12012040- SKU:
- EAG12012040
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12012040
$2,779.99 -
Eagle SBC Rotating Assembly Kit - Competition 12012030
EAGLE
$2,779.99Building a competition-ready 383 small block Chevy demands a rotating assembly engineered to handle sustained high RPMs and peak horsepower demands without compromise. The Eagle 12012030 kit pairs...EAG12012030- SKU:
- EAG12012030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12012030
$2,779.99 -
Eagle SBC Rotating Assembly Kit - Competition 12011060
EAGLE
$2,690.99A rotating assembly is the foundation of reliable, high-output power in any competition small block Chevy engine. The Eagle SBC kit (12011060) pairs a forged crankshaft and pistons with premium...EAG12011060- SKU:
- EAG12011060
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12011060
$2,690.99 -
Eagle SBC Rotating Assembly Kit - Competition 12011030
EAGLE
$2,560.99Building a 383 small block Chevy demands a rotating assembly engineered to handle sustained high-RPM stress without compromise. The Eagle SBC kit combines forged internals with precision tolerances,...EAG12011030- SKU:
- EAG12011030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12011030
$2,560.99Qty in Cart: 0Quantity:Price:$2,560.99Subtotal: -
Eagle SBC Rotating Assembly Kit - Competition 12008030
EAGLE
$2,534.99When you're pushing a Small Block Chevy to competition levels, the rotating assembly is where durability and power meet. This Eagle kit gives you the strength to handle peak cylinder pressures while...EAG12008030- SKU:
- EAG12008030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12008030
$2,534.99 -
Eagle SBC Rotating Assembly Kit - Competition 12007030
EAGLE
$2,769.99If you're building a serious small-block Chevy that needs to survive high RPM competition, this Eagle rotating assembly gives you the reliability and durability required for consistent power delivery...EAG12007030- SKU:
- EAG12007030
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- KIT12007030
$2,769.99
