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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
  • SBC R/F 1.560in Exhaust Valves MAN11501-8

    Manley SBC R/F 1.560in Exhaust Valves 11501-8

    MANLEY

    $188.69
    If you're building or rebuilding a high-performance small block Chevy, valve choice directly impacts combustion efficiency, cylinder head flow, and overall engine reliability under sustained RPM. Manley's Race Flo exhaust valves are engineered with a...
    MAN11501-8
    SKU:
    MAN11501-8
    Availability:
    Ships Same Business Day
    Weight:
    1.85 LBS
    MFG Part #:
    11501-8
    Qty in Cart: 0
    Quantity:
    Price:
    $188.69
    Subtotal:
  • SBC R/F 2.000in Intake Valves MAN11500-8

    Manley SBC R/F 2.000in Intake Valves 11500-8

    MANLEY

    $188.69
    If you're building or refreshing a Small Block Chevy engine for serious track duty, intake valve flow characteristics directly impact cylinder filling efficiency and peak horsepower. Manley's Race Flo design optimizes the valve seat geometry to maximize...
    MAN11500-8
    SKU:
    MAN11500-8
    Availability:
    Ships Same Business Day
    Weight:
    2.37 LBS
    MFG Part #:
    11500-8
    $188.69
    Qty in Cart: 0
    Quantity:
    Price:
    $188.69
    Subtotal:
  • SBC R/M 2.020in Intake Valves MAN11318-8

    Manley SBC R/M 2.020in Intake Valves 11318-8

    MANLEY

    $188.69
    If you're building a serious small block Chevy engine, your intake valves need to match the precision of your machine work. Manley's Race Master valves deliver the flow characteristics and reliability required for sustained high-RPM performance, whether...
    MAN11318-8
    SKU:
    MAN11318-8
    Availability:
    Ships Same Business Day
    Weight:
    2.44 LBS
    MFG Part #:
    11318-8
    $188.69
    Qty in Cart: 0
    Quantity:
    Price:
    $188.69
    Subtotal:
  • SBF S/F 1.850in Intake Valves MAN10778-8

    Manley SBF S/F 1.850in Intake Valves 10778-8

    MANLEY

    $138.97
    If you're running a Small Block Ford and want reliable, consistent intake valve performance across the entire RPM band, Manley's Street Flo valves deliver the durability and flow characteristics your engine demands. These stainless steel intake valves...
    MAN10778-8
    SKU:
    MAN10778-8
    Availability:
    Ships Same Business Day
    Weight:
    2.28 LBS
    MFG Part #:
    10778-8
    $138.97
    Qty in Cart: 0
    Quantity:
    Price:
    $138.97
    Subtotal:
  • SBC S/M 1.500in Exhaust Valves MAN10777-8

    Manley SBC S/M 1.500in Exhaust Valves 10777-8

    MANLEY

    $138.97
    Precision exhaust flow is non-negotiable in small block Chevy performance, and stock valves are the first constraint most builders encounter. Manley's Street Master exhaust valves deliver reliable, repeatable performance for both street and mild...
    MAN10777-8
    SKU:
    MAN10777-8
    Availability:
    Ships Same Business Day
    Weight:
    2.08 LBS
    MFG Part #:
    10777-8
    $138.97
    Qty in Cart: 0
    Quantity:
    Price:
    $138.97
    Subtotal:
  • SBC S/M 1.940in Intake Valves MAN10776-8

    Manley SBC S/M 1.940in Intake Valves 10776-8

    MANLEY

    $138.97
    Manley's Street Master intake valves deliver reliable performance and durability for small block Chevy engines that see both street and strip duty. The 1.940-inch head and stainless steel construction provide excellent flow characteristics while...
    MAN10776-8
    SKU:
    MAN10776-8
    Availability:
    Ships Same Business Day
    Weight:
    2.30 LBS
    MFG Part #:
    10776-8
    $138.97
    Qty in Cart: 0
    Quantity:
    Price:
    $138.97
    Subtotal:
  • SBC S/F 2.020in Intake Valves MAN10766-8

    Manley SBC S/F 2.020in Intake Valves 10766-8

    MANLEY

    $138.97
    Manley valves are engineered for consistent flow characteristics and durability under sustained RPM, making them the choice for serious small-block Chevy builds. These Street Flo intake valves deliver reliable performance across a wide operating range...
    MAN10766-8
    SKU:
    MAN10766-8
    Availability:
    Ships Same Business Day
    Weight:
    2.42 LBS
    MFG Part #:
    10766-8
    $138.97
    Qty in Cart: 0
    Quantity:
    Price:
    $138.97
    Subtotal:
  • SBC S/F 1.600in Exhaust Valves MAN10765-8

    Manley SBC S/F 1.600in Exhaust Valves 10765-8

    MANLEY

    $138.97
    If you're building or refreshing a Small Block Chevy engine that sees street duty, quality exhaust valves are critical to reliable performance and longevity. Manley's Street Flo exhaust valves are engineered to handle sustained combustion pressures while...
    MAN10765-8
    SKU:
    MAN10765-8
    Availability:
    Ships Same Business Day
    Weight:
    2.10 LBS
    MFG Part #:
    10765-8
    $138.97
    Qty in Cart: 0
    Quantity:
    Price:
    $138.97
    Subtotal:
  • SBC S/M 2.020in Intake Valves MAN10750-8

    Manley SBC S/M 2.020in Intake Valves 10750-8

    MANLEY

    $138.97
    If you're building or refreshing a Small Block Chevy engine, intake valve quality directly impacts cylinder filling efficiency and overall power output. Manley's Street Master valves deliver the durability and precision needed for high-RPM applications...
    MAN10750-8
    SKU:
    MAN10750-8
    Availability:
    Ships Same Business Day
    Weight:
    2.42 LBS
    MFG Part #:
    10750-8
    Qty in Cart: 0
    Quantity:
    Price:
    $138.97
    Subtotal:
  • SBC S/M 1.600in Exhaust Valves MAN10749-8

    Manley SBC S/M 1.600in Exhaust Valves 10749-8

    MANLEY

    $138.97
    Stock exhaust valves struggle under sustained heat and pressure, leading to premature wear and inconsistent combustion efficiency. Manley's Street Master exhaust valves are engineered from premium stainless steel to handle the thermal demands of small...
    MAN10749-8
    SKU:
    MAN10749-8
    Availability:
    Ships Same Business Day
    Weight:
    2.10 LBS
    MFG Part #:
    10749-8
    $138.97
    Qty in Cart: 0
    Quantity:
    Price:
    $138.97
    Subtotal:
  • SBC S/F 1.500in Exhaust Valves MAN10721-8

    Manley SBC S/F 1.500in Exhaust Valves 10721-8

    MANLEY

    $138.97
    Exhaust valve quality directly impacts cylinder sealing, heat dissipation, and engine longevity—especially in high-performance Small Block Chevy applications where reliability cannot be compromised. Manley's Street Flo exhaust valves deliver the...
    MAN10721-8
    SKU:
    MAN10721-8
    Availability:
    Ships Same Business Day
    Weight:
    1.96 LBS
    MFG Part #:
    10721-8
    $138.97
    Qty in Cart: 0
    Quantity:
    Price:
    $138.97
    Subtotal:
  • SBC B/R 2.020in Intake Valves MAN10650-8

    Manley SBC B/R 2.020in Intake Valves 10650-8

    MANLEY

    $74.38
    For small-block Chevy builders who demand reliability without breaking the budget, Manley's SBC B/R intake valves deliver consistent performance across a full rebuild or refresh. These stainless steel valves are engineered to handle sustained RPM loads...
    MAN10650-8
    SKU:
    MAN10650-8
    Availability:
    Ships Same Business Day
    Weight:
    2.53 LBS
    MFG Part #:
    10650-8
    $74.38
    Qty in Cart: 0
    Quantity:
    Price:
    $74.38
    Subtotal:
  • SBC B/R 1.600in Exhaust Valves MAN10649-8

    Manley SBC B/R 1.600in Exhaust Valves 10649-8

    MANLEY

    $74.38
    Upgrading to quality stainless steel exhaust valves is essential for maintaining reliable combustion sealing and heat dissipation in high-mileage or modified Small Block Chevy engines. Manley's Budget Series valves deliver the precision engineering and...
    MAN10649-8
    SKU:
    MAN10649-8
    Availability:
    Ships Same Business Day
    Weight:
    2.25 LBS
    MFG Part #:
    10649-8
    $74.38
    Qty in Cart: 0
    Quantity:
    Price:
    $74.38
    Subtotal:
  • SBC B/P 1.500in Exhaust Valves MAN10577-8

    Manley SBC B/P 1.500in Exhaust Valves 10577-8

    MANLEY

    $95.12
    Stock exhaust valves often become a limiting factor in high-revving Small Block Chevy builds, leading to poor flow and inconsistent sealing under sustained boost or nitrous. These Manley stainless steel exhaust valves deliver the durability and precision...
    MAN10577-8
    SKU:
    MAN10577-8
    Availability:
    Ships Same Business Day
    Weight:
    2.10 LBS
    MFG Part #:
    10577-8
    $95.12
    Qty in Cart: 0
    Quantity:
    Price:
    $95.12
    Subtotal:
  • SBC B/P 1.940in Intake Valves MAN10576-8

    Manley SBC B/P 1.940in Intake Valves 10576-8

    MANLEY

    $95.12
    If you're building or refreshing a Small Block Chevy or Ford engine, your intake valves are critical to cylinder head efficiency and overall engine performance. Manley's Budget Series intake valves deliver proven reliability and precise engineering at a...
    MAN10576-8
    SKU:
    MAN10576-8
    Availability:
    Ships Same Business Day
    Weight:
    2.25 LBS
    MFG Part #:
    10576-8
    $95.12
    Qty in Cart: 0
    Quantity:
    Price:
    $95.12
    Subtotal:
  • SBC B/P 2.055in Intake Valves MAN10554-8

    Manley SBC B/P 2.055in Intake Valves 10554-8

    MANLEY

    $95.12
    If you're building or refreshing a Small Block Chevy engine, quality intake valves are non-negotiable—they directly impact airflow efficiency, combustion reliability, and longevity under load. Manley's Budget Series intake valves deliver OEM-grade...
    MAN10554-8
    SKU:
    MAN10554-8
    Availability:
    Ships Same Business Day
    Weight:
    2.40 LBS
    MFG Part #:
    10554-8
    Qty in Cart: 0
    Quantity:
    Price:
    $95.12
    Subtotal:
  • SBC B/P 2.020in Intake Valves MAN10552-8

    Manley SBC B/P 2.020in Intake Valves 10552-8

    MANLEY

    $95.12
    If you're rebuilding or upgrading your Small Block Chevy engine, quality intake valves are non-negotiable—they directly impact combustion efficiency, valve sealing, and engine longevity. Manley's Budget Series intake valves deliver proven reliability and...
    MAN10552-8
    SKU:
    MAN10552-8
    Availability:
    Ships Same Business Day
    Weight:
    2.39 LBS
    MFG Part #:
    10552-8
    $95.12
    Qty in Cart: 0
    Quantity:
    Price:
    $95.12
    Subtotal:
  • SBC B/P 1.600in Exhaust Valves MAN10551-8

    Manley SBC B/P 1.600in Exhaust Valves 10551-8

    MANLEY

    $95.12
    If you're building or rebuilding a Small Block Chevy engine, valve quality directly impacts combustion efficiency, durability, and overall performance. These Manley stainless steel exhaust valves are engineered for reliability in high-heat environments,...
    MAN10551-8
    SKU:
    MAN10551-8
    Availability:
    Ships Same Business Day
    Weight:
    2.16 LBS
    MFG Part #:
    10551-8
    $95.12
    Qty in Cart: 0
    Quantity:
    Price:
    $95.12
    Subtotal:
  • SBC B/P 2.020in Intake Valves MAN10550-8

    Manley SBC B/P 2.020in Intake Valves 10550-8

    MANLEY

    $95.12
    If you're building or refreshing a Small Block Chevy or Ford engine, valve quality directly impacts combustion efficiency and reliability under sustained RPM. These Manley intake valves deliver the durability and precision you need for both street and...
    MAN10550-8
    SKU:
    MAN10550-8
    Availability:
    Ships Same Business Day
    Weight:
    2.35 LBS
    MFG Part #:
    10550-8
    $95.12
    Qty in Cart: 0
    Quantity:
    Price:
    $95.12
    Subtotal:
  • SBC B/P 1.600in Exhaust Valves MAN10549-8

    Manley SBC B/P 1.600in Exhaust Valves 10549-8

    MANLEY

    $95.12
    Stock exhaust valves are often the first component to suffer from heat stress and carbon buildup, restricting flow and reducing power output. The Manley SBC B/P 1.600in Exhaust Valves deliver reliable, precision-engineered performance in a...
    MAN10549-8
    SKU:
    MAN10549-8
    Availability:
    Ships Same Business Day
    Weight:
    2.13 LBS
    MFG Part #:
    10549-8
    $95.12
    Qty in Cart: 0
    Quantity:
    Price:
    $95.12
    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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