Select Your Ride

1
2
3

Rotating Assembly

Rotating Assembly

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

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 Balanced Rotating Assembly - 383 .030 KITB15454E030

    Eagle SBC Balanced Rotating Assembly - 383 .030 KITB15454E030

    EAGLE

    $1,289.99
    Rotating Assembly383 CIDCast CrankHypereutectic Pistons3.750 in Stroke5.700 in I-Beam RodsSmall Block ChevyKit
    EAGB15454E030
    SKU:
    EAGB15454E030
    Availability:
    Ships Same Business Day
    Weight:
    95.00 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $1,289.99
    Subtotal:
  • sbc street perf engine assembly balanced kitb15405e060

    Eagle SBC Street Perf Engine Assembly Balanced KITB15405E060

    EAGLE

    $1,437.99
    Rotating Assembly388 CIDCast CrankHypereutectic Pistons3.750 in Stroke5.700 in I Beam RodsSmall Block ChevyKit
    EAGB15405E060
    SKU:
    EAGB15405E060
    Availability:
    Ships Same Business Day
    Weight:
    95.00 LBS
    $1,437.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,437.99
    Subtotal:
  • sbc balanced rotating assembly kit kitb15402e040

    Eagle SBC Balanced Rotating Assembly Kit KITB15402E040

    EAGLE

    $1,204.99
    Rotating AssemblyStreet / Strip357 CIDCast CrankHypereutectic Pistons4.040 in Bore5.700 in I Beam RodsSmall Block ChevyKit
    EAGB15402E040
    SKU:
    EAGB15402E040
    Availability:
    Ships Same Business Day
    Weight:
    88.00 LBS
    $1,204.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,204.99
    Subtotal:
  • SBF Rotating Assembly Kit 289/302 EAG16003040

    Eagle SBF Rotating Assembly Kit 289/302 16003040

    EAGLE

    $1,529.99
    Rotating Assembly349 CIDCast CrankForged Pistons3.400 in Stroke4.040 in Bore5.400 in I Beam RodsSmall Block FordKit
    EAG16003040
    SKU:
    EAG16003040
    Availability:
    Ships Same Business Day
    Weight:
    85.00 LBS
    $1,529.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,529.99
    Subtotal:
  • SBC Rotating Assembly Kit - Street & Strip EAG13202040

    Eagle SBC Rotating Assembly Kit - Street & Strip 13202040

    EAGLE

    $1,218.99
    Rotating Assembly350 CIDCast CrankHypereutectic Pistons3.480 in Stroke4.040 in Bore5.700 in I Beam RodsSmall Block ChevyKit
    EAG13202040
    SKU:
    EAG13202040
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    $1,218.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,218.99
    Subtotal:
  • SBC Rotating Assembly Kit - Street & Strip EAG13202030

    Eagle SBC Rotating Assembly Kit - Street & Strip 13202030

    EAGLE

    $1,218.99
    Rotating Assembly350 CIDCast CrankHypereutectic Pistons3.480 in Stroke4.030 in Bore5.700 in I Beam RodsSmall Block ChevyKit
    EAG13202030
    SKU:
    EAG13202030
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    $1,218.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,218.99
    Subtotal:
  • SBC Rotating Assembly Kit Street/Strip EAG13056030

    Eagle SBC Rotating Assembly Kit Street/Strip 13056030

    EAGLE

    $1,599.99
    Rotating AssemblyStreet / Strip383 CIDCast CrankForged Pistons3.750 in Stroke4.030 in Bore5.700 in I Beam RodsSmall Block ChevyKit
    EAG13056030
    SKU:
    EAG13056030
    Availability:
    Ships Same Business Day
    Weight:
    55.00 LBS
    $1,599.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,599.99
    Subtotal:
  • SBC Rotating Assembly Kit - Street & Strip EAG13021040

    Eagle SBC Rotating Assembly Kit - Street & Strip 13021040

    EAGLE

    $1,542.99
    Rotating Assembly350 CIDCast CrankForged Pistons3.480 in Stroke4.040 in Bore5.700 in I Beam RodsSmall Block ChevyKit
    EAG13021040
    SKU:
    EAG13021040
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    $1,542.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,542.99
    Subtotal:
  • SBC Rotating Assembly Kit - Street & Strip EAG13021030

    Eagle SBC Rotating Assembly Kit - Street & Strip 13021030

    EAGLE

    $1,542.99
    Complete rotating assembly designed for optimal performance Compatible with 350 CID engines for powerful street and strip applications Durable cast crankshaft for reliability and strength High-quality forged pistons for enhanced durability and...
    EAG13021030
    SKU:
    EAG13021030
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    $1,542.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,542.99
    Subtotal:
  • SBC Rotating Assembly Kit - Street & Strip EAG13020030

    Eagle SBC Rotating Assembly Kit - Street & Strip 13020030

    EAGLE

    $1,679.99
    Complete rotating assembly designed for optimal performance Compatible with 350 CID engines for powerful street and strip applications Durable cast crankshaft for reliability and strength High-quality forged pistons for enhanced durability and...
    EAG13020030
    SKU:
    EAG13020030
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    $1,679.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,679.99
    Subtotal:
  • SBC Rotating Assembly Kit - Street & Strip EAG13010040

    Eagle SBC Rotating Assembly Kit - Street & Strip 13010040

    EAGLE

    $1,278.99
    Rotating Assembly406 CIDCast CrankHypereutectic Pistons3.750 in Stroke4.165 in Bore5.700 in I Beam RodsSmall Block ChevyKit
    EAG13010040
    SKU:
    EAG13010040
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    $1,278.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,278.99
    Subtotal:
  • SBC Rotating Assembly Kit - Street & Strip EAG13007030

    Eagle SBC Rotating Assembly Kit - Street & Strip 13007030

    EAGLE

    $1,549.99
    Rotating Assembly383 CIDCast CrankForged Pistons3.750 in Stroke4.030 in Bore6.000 in I Beam RodsSmall Block ChevyKit
    EAG13007030
    SKU:
    EAG13007030
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $1,549.99
    Subtotal:
  • SBC Rotating Assembly Kit - Street & Strip EAG13006030

    Eagle SBC Rotating Assembly Kit - Street & Strip 13006030

    EAGLE

    $1,549.99
    Rotating Assembly383 CIDCast CrankForged Pistons3.750 in Stroke4.030 in Bore5.700 in I Beam RodsSmall Block ChevyKit
    EAG13006030
    SKU:
    EAG13006030
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    $1,549.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,549.99
    Subtotal:
  • SBC Rotating Assembly Kit - Street & Strip EAG13005040

    Eagle SBC Rotating Assembly Kit - Street & Strip 13005040

    EAGLE

    $1,099.99
    Rotating Assembly383 CIDCast CrankHypereutectic Pistons3.750 in Stroke4.040 in Bore5.700 in I Beam RodsSmall Block ChevyKit
    EAG13005040
    SKU:
    EAG13005040
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    $1,099.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,099.99
    Subtotal:
  • SBC Rotating Assembly Kit - Street & Strip EAG13005030

    Eagle SBC Rotating Assembly Kit - Street & Strip 13005030

    EAGLE

    $1,099.99
    Rotating Assembly383 CIDCast CrankHypereutectic Pistons3.750 in Stroke4.030 in Bore5.700 in I Beam RodsSmall Block ChevyKit
    EAG13005030
    SKU:
    EAG13005030
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    $1,099.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,099.99
    Subtotal:
  • Eagle SBF Rotating Assembly Kit - Street & Strip 16004030

    Eagle SBF Rotating Assembly Kit - Street & Strip 16004030

    EAGLE

    $1,679.99
    SBF Rotating Assembly Kit - Street & StripRotating Assembly347 CIDCast CrankForged Pistons3.400 in Stroke4.030 in Bore5.400 in I Beam RodsSmall Block FordKit
    EAG16004030
    SKU:
    EAG16004030
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MFG Part #:
    KIT16004030
    $1,679.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,679.99
    Subtotal:
  • SBC Rotating Assembly Kit - Competition EAG12029030

    Eagle SBC Rotating Assembly Kit - Competition 12029030

    EAGLE

    $2,649.99
    SBC Rotating Assembly Kit - 12029030 High-performance Rotating Assembly designed for competition use Engineered for 355 CID Small Block Chevy applications Durable forged crank for exceptional strength and reliability Lightweight forged pistons enhance...
    EAG12029030
    SKU:
    EAG12029030
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MFG Part #:
    KIT12029030
    $2,649.99
    Qty in Cart: 0
    Quantity:
    Price:
    $2,649.99
    Subtotal:
  • SBC Rotating Assembly Kit - Competition EAG12020040

    Eagle SBC Rotating Assembly Kit - Competition 12020040

    EAGLE

    $2,509.99
    SBC Rotating Assembly Kit - CompetitionRotating Assembly357 CIDForged CrankForged Pistons3.500 in Stroke4.040 in Bore6.000 in H Beam RodsSmall Block ChevyKit
    EAG12020040
    SKU:
    EAG12020040
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MFG Part #:
    KIT12020040
    $2,509.99
    Qty in Cart: 0
    Quantity:
    Price:
    $2,509.99
    Subtotal:
  • SBC Rotating Assembly Kit - Competition EAG12004060

    Eagle SBC Rotating Assembly Kit - Competition 12004060

    EAGLE

    $2,619.99
    SBC Rotating Assembly Kit - CompetitionRotating Assembly355 CIDForged CrankForged Pistons3.480 in Stroke4.060 in Bore6.000 in H Beam RodsSmall Block ChevyKit
    EAG12004060
    SKU:
    EAG12004060
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MFG Part #:
    KIT12004060
    $2,619.99
    Qty in Cart: 0
    Quantity:
    Price:
    $2,619.99
    Subtotal:
  • SBC Rotating Assembly Kit - Competition EAG12004030

    Eagle SBC Rotating Assembly Kit - Competition 12004030

    EAGLE

    $2,609.99
    SBC Rotating Assembly Kit - CompetitionRotating Assembly355 CIDForged CrankForged Pistons3.480 in Stroke4.030 in Bore6.000 in H Beam RodsSmall Block ChevyKit
    EAG12004030
    SKU:
    EAG12004030
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MFG Part #:
    KIT12004030
    Qty in Cart: 0
    Quantity:
    Price:
    $2,609.99
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

SECURE & SAFE PAYMENT

EASY RETURNS

FAST DELIVERY

AUTHORIZED DEALER