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Engines and Components

Engines and Components

Engines and Components

Circle Track Engine Parts: Camshafts, Blocks & Accessories for Late Models at JJ Motorsports

Power up your circle track engine with premium components from JJ Motorsports. Our selection includes serpentine drive kits, pulley systems, valve covers, engine blocks, camshafts, and more for maximum horsepower, durability, and performance in late models, modifieds, street stocks, and IMCA dirt racing. Compatible with Small Block Chevy (SBC), LS-series, and other racing engines, these high-quality parts ensure reliable operation under intense track conditions.

Shop trusted brands like Jones Racing, Allstar Performance, Chevrolet Performance, and Howards Racing Components. Explore related categories such as circle track drivetrain for transmission upgrades or circle track chassis components for frame enhancements.

Top Circle Track Engine Products

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
  • Oil Pressure Primer Tank  ALL10535

    Allstar Performance Oil Pressure Primer Tank ALL10535

    ALLSTAR PERFORMANCE

    $194.99
    Pre-oiling your engine before startup is critical to protecting bearing surfaces and ensuring proper lubrication when oil pressure is building. The Allstar Performance Oil Pressure Primer Tank eliminates guesswork by allowing you to prime your oil system...
    ALL10535
    SKU:
    ALL10535
    Availability:
    Ships Same Business Day
    Weight:
    7.15 LBS
    $194.99
    Qty in Cart: 0
    Quantity:
    Price:
    $194.99
    Subtotal:
  • LS3 12-Degr Cylinder Heads Fully CNC Ported AFR1845

    Air Flow Research LS3 12-Degr Cylinder Heads Fully CNC Ported 1845

    AIR FLOW RESEARCH

    $3,188.00
    If you're serious about maximizing LS3 performance, AFR's fully CNC-ported cylinder heads deliver the airflow and combustion efficiency that separates built engines from stock units. These assembled heads arrive ready to bolt on, eliminating machine shop...
    AFR1845
    SKU:
    AFR1845
    Availability:
    Ships Same Business Day
    Weight:
    72.00 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $3,188.00
    Subtotal:
  • On Sale
    Rod Bearing Set - SBC  AEB8B663P-STD

    ACL Bearings Rod Bearing Set - SBC 8B663P-STD

    ACL BEARINGS

    MSRP: $37.99
    Now: $32.29
    Was: $37.99
    Connecting rod bearings are the critical interface between your rotating crankshaft and reciprocating rods—they must handle extreme pressures and temperatures while maintaining precision clearances. ACL's Duraglide technology delivers superior load...
    AEB8B663P-STD
    SKU:
    AEB8B663P-STD
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    MSRP: $37.99
    Now: $32.29
    Was: $37.99
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $37.99
    Now: $32.29
    Was: $37.99
    Subtotal:
  • On Sale
    Rod Bearing Set - SBC  AEB8B663P-10

    ACL Bearings Rod Bearing Set - SBC 8B663P-10

    ACL BEARINGS

    MSRP: $37.99
    Now: $32.29
    Was: $37.99
    Rod bearings are critical to engine longevity—they support your connecting rods under extreme loads and temperatures, making quality construction non-negotiable for any serious build. ACL's Duraglide coating delivers superior film strength and wear...
    AEB8B663P-10
    SKU:
    AEB8B663P-10
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    MSRP: $37.99
    Now: $32.29
    Was: $37.99
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $37.99
    Now: $32.29
    Was: $37.99
    Subtotal:
  • On Sale
    Rod Bearing Set  AEB8B1663HX-STD

    ACL Bearings Rod Bearing Set 8B1663HX-STD

    ACL BEARINGS

    MSRP: $135.99
    Now: $114.94
    Was: $135.99
    Connecting rod bearings are critical to engine longevity and reliability—they handle the extreme pressures and temperatures generated during combustion cycles. The ACL 8B1663HX-STD delivers the precision tolerances and extra oil clearance needed to...
    AEB8B1663HX-STD
    SKU:
    AEB8B1663HX-STD
    Availability:
    Ships Same Business Day
    Weight:
    0.72 LBS
    MSRP: $135.99
    Now: $114.94
    Was: $135.99
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $135.99
    Now: $114.94
    Was: $135.99
    Subtotal:
  • On Sale
    Rod Bearing Set  AEB8B1663H-10

    ACL Bearings Rod Bearing Set 8B1663H-10

    ACL BEARINGS

    MSRP: $135.99
    Now: $114.94
    Was: $135.99
    Precision-engineered connecting rod bearings are critical to engine longevity and reliability—especially in high-RPM or forced-induction applications where factory tolerances fall short. The ACL Bearings H-Series rod bearing set delivers the tight...
    AEB8B1663H-10
    SKU:
    AEB8B1663H-10
    Availability:
    Ships Same Business Day
    Weight:
    0.92 LBS
    MSRP: $135.99
    Now: $114.94
    Was: $135.99
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $135.99
    Now: $114.94
    Was: $135.99
    Subtotal:
  • On Sale
    Rod Bearing Set  AEB8B1663H-01

    ACL Bearings Rod Bearing Set 8B1663H-001

    ACL BEARINGS

    MSRP: $135.99
    Now: $114.94
    Was: $135.99
    Rod bearings are the critical interface between your connecting rods and crankshaft—they determine whether your engine survives sustained high RPM operation or fails catastrophically. The ACL 8B1663H-001 set delivers the precision clearances and load...
    AEB8B1663H-01
    SKU:
    AEB8B1663H-01
    Availability:
    Ships Same Business Day
    Weight:
    0.88 LBS
    MSRP: $135.99
    Now: $114.94
    Was: $135.99
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $135.99
    Now: $114.94
    Was: $135.99
    Subtotal:
  • On Sale
    Main Bearing Set - SBC  AEB5M909P-STD

    ACL Bearings Main Bearing Set - SBC 5M909P-STD

    ACL BEARINGS

    MSRP: $50.99
    Now: $42.74
    Was: $50.99
    Main bearings are the foundation of engine reliability—they support your crankshaft under extreme loads and determine how well your engine can handle sustained RPM and boost. ACL's Duraglide coating technology reduces friction and wear, directly...
    AEB5M909P-STD
    SKU:
    AEB5M909P-STD
    Availability:
    Ships Same Business Day
    Weight:
    1.20 LBS
    MSRP: $50.99
    Now: $42.74
    Was: $50.99
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $50.99
    Now: $42.74
    Was: $50.99
    Subtotal:
  • On Sale
    Main Bearing Set - SBC  AEB5M909P-10

    ACL Bearings Main Bearing Set - SBC 5M909P-10

    ACL BEARINGS

    MSRP: $50.99
    Now: $42.74
    Was: $50.99
    A quality main bearing set is the foundation of engine reliability and longevity. ACL's Duraglide main bearings are engineered to withstand sustained high-RPM loads while maintaining precise journal clearances, making them essential for both stock...
    AEB5M909P-10
    SKU:
    AEB5M909P-10
    Availability:
    Ships Same Business Day
    Weight:
    1.25 LBS
    MSRP: $50.99
    Now: $42.74
    Was: $50.99
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $50.99
    Now: $42.74
    Was: $50.99
    Subtotal:
  • GM LS1 Pro-St R/A Kit 1.7 Ratio - Adjustable YTRYT6683

    GM LS1 Pro-St R/A Kit 1.7 Ratio - Adjustable YTRYT6683

    YELLA TERRA

    $835.99
    Maximizing valve lift and duration is critical for high-RPM LS1 performance, and this Pro-Series rocker arm kit delivers the precise 1.7:1 ratio needed to unlock your engine's full potential. The ultralite aluminum construction minimizes reciprocating...
    YTRYT6683
    SKU:
    YTRYT6683
    Availability:
    Ships Same Business Day
    Weight:
    8.65 LBS
    MFG Part #:
    YT6683
    Qty in Cart: 0
    Quantity:
    Price:
    $835.99
    Subtotal:
  • SBC Platinum R/A Kit - 1.6/1.5 Ratio YTRYT6341

    SBC Platinum R/A Kit - 1.6/1.5 Ratio YTRYT6341

    YELLA TERRA

    $967.99
    Maximize valve lift and duration with a proven rocker arm ratio that delivers more aggressive valve events without sacrificing reliability. The SBC Platinum R/A Kit's shaft-mount design provides superior stability and repeatability across engine speeds,...
    YTRYT6341
    SKU:
    YTRYT6341
    Availability:
    Ships Same Business Day
    Weight:
    10.49 LBS
    MFG Part #:
    YT6341
    $967.99
    Qty in Cart: 0
    Quantity:
    Price:
    $967.99
    Subtotal:
  • Saddle 7/16in 28.6mm Height YTRYT6263

    Saddle 7/16in 28.6mm Height YTRYT6263

    YELLA TERRA

    $7.00
    A rocker arm saddle is critical for maintaining precise valve timing and durability under high RPM conditions. This Yella Terra saddle ensures proper rocker arm geometry and alignment, reducing wear on your valvetrain and maximizing power transfer to...
    YTRYT6263
    SKU:
    YTRYT6263
    Availability:
    Ships Same Business Day
    Weight:
    0.16 LBS
    MFG Part #:
    YT6263
    Qty in Cart: 0
    Quantity:
    Price:
    $7.00
    Subtotal:
  • SBC Platinum R/A Kit - 1.6 Ratio YTRYT6009

    SBC Platinum R/A Kit - 1.6 Ratio YTRYT6009

    YELLA TERRA

    $967.99
    A 1.6 ratio rocker arm kit directly increases valve lift and duration, giving your small block Chevy more aggressive valvetrain geometry for improved airflow and higher RPM capability. The roller tip design reduces friction on the pushrod, minimizing...
    YTRYT6009
    SKU:
    YTRYT6009
    Availability:
    Ships Same Business Day
    Weight:
    10.54 LBS
    MFG Part #:
    YT6009
    $967.99
    Qty in Cart: 0
    Quantity:
    Price:
    $967.99
    Subtotal:
  • SBC Platinum R/A Kit - 1.55 Ratio YTRYT6008

    SBC Platinum R/A Kit - 1.55 Ratio YTRYT6008

    YELLA TERRA

    $967.99
    A quality rocker arm kit directly impacts your Small Block Chevy's valve train efficiency and overall engine reliability. The 1.55 ratio mechanical advantage in this Platinum R/A Kit provides measurable lift increases at the valve, translating to...
    YTRYT6008
    SKU:
    YTRYT6008
    Availability:
    Ships Same Business Day
    Weight:
    10.45 LBS
    MFG Part #:
    YT6008
    $967.99
    Qty in Cart: 0
    Quantity:
    Price:
    $967.99
    Subtotal:
  • In-Line Oil Filter w/-12 Inlet & Outlet wo/Screen XRP7112SAN

    XRP In-Line Oil Filter w/-12 Inlet & Outlet wo/Screen XRP7112SAN

    XRP-XTREME RACING PROD.

    $148.99
    An in-line oil filter is essential for any high-performance engine running synthetic oils, nitrous, or forced induction—it keeps contaminants out of critical bearing surfaces without the bulk of a traditional canister. The XRP 7112SAN delivers reliable...
    XRP7112SAN
    SKU:
    XRP7112SAN
    Availability:
    Ships Same Business Day
    Weight:
    2.00 LBS
    MFG Part #:
    7112SAN
    $148.99
    Qty in Cart: 0
    Quantity:
    Price:
    $148.99
    Subtotal:
  • In-Line Oil Filter w/-12 Inlet & Outlet wo/Screen XRP7112AN

    XRP In-Line Oil Filter w/-12 Inlet & Outlet wo/Screen XRP7112AN

    XRP-XTREME RACING PROD.

    $139.99
    Dedicated engine protection starts with efficient oil filtration, and an in-line filter setup gives you superior control over flow rates and bypass protection in high-performance applications. The XRP 7112AN delivers aluminum construction with -12 AN...
    XRP7112AN
    SKU:
    XRP7112AN
    Availability:
    Ships Same Business Day
    Weight:
    1.15 LBS
    MFG Part #:
    7112AN
    $139.99
    Qty in Cart: 0
    Quantity:
    Price:
    $139.99
    Subtotal:
  • 10 Micron S/S Screen Element for 70 Series XRP703010

    XRP 10 Micron S/S Screen Element for 70 Series XRP703010

    XRP-XTREME RACING PROD.

    $68.99
    Maintaining oil cleanliness is non-negotiable in high-performance applications where engine wear accelerates rapidly under extreme conditions. This 10-micron stainless steel screen element removes contaminants that can compromise bearing surfaces and...
    XRP703010
    SKU:
    XRP703010
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    MFG Part #:
    703010
    Qty in Cart: 0
    Quantity:
    Price:
    $68.99
    Subtotal:
  • XRP 70 Series 8 AN In-Line Oil Filter 6.2 in Length Black Anodized XRP7008AN

    XRP 70 Series 8 AN In-Line Oil Filter 6.2 in Length Black Anodized XRP7008AN

    XRP-XTREME RACING PROD.

    $139.99
    When you're running a high-performance engine, oil filtration isn't optional—it's critical. The XRP 70 Series 8 AN In-Line Oil Filter delivers compact, dependable filtration for race applications and serious builds where space and reliability matter. Its...
    XRP7008AN
    SKU:
    XRP7008AN
    Availability:
    Ships Same Business Day
    Weight:
    0.55 LBS
    MFG Part #:
    7008AN
    $139.99
    Qty in Cart: 0
    Quantity:
    Price:
    $139.99
    Subtotal:
  • SBC Domed Piston Set 4.165 Bore +8cc WPTPTS535A4

    SBC Domed Piston Set 4.165 Bore +8cc WPTPTS535A4

    WISECO-PRO TRU

    $635.99
    Building peak compression and maximizing combustion efficiency in your Small Block Chevy demands pistons engineered for precision and durability. These forged domed pistons deliver the higher compression ratio needed for serious power gains while...
    WPTPTS535A4
    SKU:
    WPTPTS535A4
    Availability:
    Ships Same Business Day
    Weight:
    14.09 LBS
    MFG Part #:
    PTS535A4
    $635.99
    Qty in Cart: 0
    Quantity:
    Price:
    $635.99
    Subtotal:
  • SBC F/T Piston Set 4.155 Bore -5cc WPTPTS525A3

    SBC F/T Piston Set 4.155 Bore -5cc WPTPTS525A3

    WISECO-PRO TRU

    $629.99
    If you're building a high-compression SBC engine for street or bracket racing, piston quality directly impacts reliability and power output. The Pro Tru Street Series delivers forged construction with a coated skirt to minimize friction and wear—critical...
    WPTPTS525A3
    SKU:
    WPTPTS525A3
    Availability:
    Ships Same Business Day
    Weight:
    14.00 LBS
    MFG Part #:
    PTS525A3
    $629.99
    Qty in Cart: 0
    Quantity:
    Price:
    $629.99
    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

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