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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
  • 7 Degree Super Valve Locks - Bead Loc MAN13051-8

    Manley 7 Degree Super Valve Locks - Bead Loc 13051-8

    MANLEY

    $48.26
    Valve lock failure is a catastrophic engine event—it leads to dropped valves, bent pushrods, and bent valves that destroy your entire cylinder head. Manley's 7 Degree Super Valve Locks eliminate this risk with precision engineering and proven durability...
    MAN13051-8
    SKU:
    MAN13051-8
    Availability:
    Ships Same Business Day
    Weight:
    0.19 LBS
    MFG Part #:
    13051-8
    $48.26
    Qty in Cart: 0
    Quantity:
    Price:
    $48.26
    Subtotal:
  • Super 7 Bead Loc Valve Locks  5/16  -.050 MAN13050-8

    Manley Super 7 Bead Loc Valve Locks 5/16 -.050 13050-8

    MANLEY

    $48.26
    Valve lock failure is a catastrophic failure mode that can result in dropped valves and complete engine damage. Manley's Super 7 Bead Loc design provides secure retention across high RPM applications, eliminating the risk of valve stem separation. If...
    MAN13050-8
    SKU:
    MAN13050-8
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MFG Part #:
    13050-8
    $48.26
    Qty in Cart: 0
    Quantity:
    Price:
    $48.26
    Subtotal:
  • SBC S/D 1.940in Intake Valves MAN11886-8

    Manley SBC S/D 1.940in Intake Valves 11886-8

    MANLEY

    $311.48
    Manley's Severe Duty intake valves are engineered for high-RPM Small Block Chevy applications where stock components simply can't survive sustained performance demands. Built from premium stainless steel, these valves deliver exceptional reliability in...
    MAN11886-8
    SKU:
    MAN11886-8
    Availability:
    Ships Same Business Day
    Weight:
    2.38 LBS
    MFG Part #:
    11886-8
    $311.48
    Qty in Cart: 0
    Quantity:
    Price:
    $311.48
    Subtotal:
  • SBC R/M 1.600in Exhaust Valves MAN11877-8

    Manley SBC R/M 1.600in Exhaust Valves 11877-8

    MANLEY

    $188.69
    If you're building a high-revving small block Chevy engine that demands reliability at sustained RPMs, OEM exhaust valves simply won't cut it. Manley's Race Master exhaust valves are engineered with premium stainless steel construction and precise...
    MAN11877-8
    SKU:
    MAN11877-8
    Availability:
    Ships Same Business Day
    Weight:
    2.36 LBS
    MFG Part #:
    11877-8
    $188.69
    Qty in Cart: 0
    Quantity:
    Price:
    $188.69
    Subtotal:
  • SBC S/D 1.600in Exhaust Valves MAN11865-8

    Manley SBC S/D 1.600in Exhaust Valves 11865-8

    MANLEY

    $301.07
    Exhaust valves are mission-critical components that endure extreme heat and pressure cycles—failure here means catastrophic engine damage and lost race time. Manley's Severe Duty specification delivers the reliability and thermal stability needed for...
    MAN11865-8
    SKU:
    MAN11865-8
    Availability:
    Ships Same Business Day
    Weight:
    2.30 LBS
    MFG Part #:
    11865-8
    $301.07
    Qty in Cart: 0
    Quantity:
    Price:
    $301.07
    Subtotal:
  • SBC R/M 2.020in Intake Valves MAN11864-8

    Manley SBC R/M 2.020in Intake Valves 11864-8

    MANLEY

    $188.69
    If you're building a high-revving Small Block Chevy that demands reliability at the track, you need intake valves engineered for the demands of competitive racing. Manley's Race Master line delivers the precision tolerances and material quality required...
    MAN11864-8
    SKU:
    MAN11864-8
    Availability:
    Ships Same Business Day
    Weight:
    2.40 LBS
    MFG Part #:
    11864-8
    $188.69
    Qty in Cart: 0
    Quantity:
    Price:
    $188.69
    Subtotal:
  • SBC R/M 1.600in Exhaust Valves MAN11863-8

    Manley SBC R/M 1.600in Exhaust Valves 11863-8

    MANLEY

    $188.69
    When you're building a race-ready Small Block Chevy, valve quality directly impacts combustion efficiency and power output. Manley's Race Master exhaust valves deliver the precision metallurgy and tight tolerances required for sustained high-RPM...
    MAN11863-8
    SKU:
    MAN11863-8
    Availability:
    Ships Same Business Day
    Weight:
    2.22 LBS
    MFG Part #:
    11863-8
    $188.69
    Qty in Cart: 0
    Quantity:
    Price:
    $188.69
    Subtotal:
  • SBC R/M 1.500in Exhaust Valves MAN11861-8

    Manley SBC R/M 1.500in Exhaust Valves 11861-8

    MANLEY

    $188.69
    Exhaust valves are critical to your engine's ability to expel combustion gases efficiently—weak or worn valves directly reduce horsepower and throttle response. Manley's Race Master exhaust valves are engineered for sustained high-RPM operation with...
    MAN11861-8
    SKU:
    MAN11861-8
    Availability:
    Ships Same Business Day
    Weight:
    2.08 LBS
    MFG Part #:
    11861-8
    $188.69
    Qty in Cart: 0
    Quantity:
    Price:
    $188.69
    Subtotal:
  • SBC R/M 1.940in Intake Valves MAN11860-8

    Manley SBC R/M 1.940in Intake Valves 11860-8

    MANLEY

    $188.69
    When you're building a race-ready Small Block Chevy engine, intake valve quality directly impacts cylinder head flow, combustion efficiency, and peak horsepower. Manley's Race Master valves deliver the precision tolerances and material durability...
    MAN11860-8
    SKU:
    MAN11860-8
    Availability:
    Ships Same Business Day
    Weight:
    2.33 LBS
    MFG Part #:
    11860-8
    $188.69
    Qty in Cart: 0
    Quantity:
    Price:
    $188.69
    Subtotal:
  • SBC S/D 2.080in Intake Valves MAN11858-8

    Manley SBC S/D 2.080in Intake Valves 11858-8

    MANLEY

    $311.48
    If you're building a serious small-block Chevy engine, intake valve quality directly impacts combustion efficiency, durability under high RPM, and overall power output. Manley's severe-duty stainless valves are engineered to withstand extreme...
    MAN11858-8
    SKU:
    MAN11858-8
    Availability:
    Ships Same Business Day
    Weight:
    2.67 LBS
    MFG Part #:
    11858-8
    $311.48
    Qty in Cart: 0
    Quantity:
    Price:
    $311.48
    Subtotal:
  • SBC S/D 2.055in Intake Valves MAN11846-8

    Manley SBC S/D 2.055in Intake Valves 11846-8

    MANLEY

    $301.07
    Manley's Severe Duty intake valves are engineered for high-RPM, high-heat applications where reliability cannot be compromised. Built from stainless steel and designed specifically for Small Block Chevy platforms, these valves maintain precise sealing...
    MAN11846-8
    SKU:
    MAN11846-8
    Availability:
    Ships Same Business Day
    Weight:
    2.61 LBS
    MFG Part #:
    11846-8
    $301.07
    Qty in Cart: 0
    Quantity:
    Price:
    $301.07
    Subtotal:
  • SBC S/D 2.080in Intake Valves MAN11844-8

    Manley SBC S/D 2.080in Intake Valves 11844-8

    MANLEY

    $301.07
    If you're building a high-revving Small Block Chevy engine that demands reliable valve response under extreme conditions, Manley's Severe Duty intake valves are engineered to handle sustained high-RPM operation without compromise. Stainless steel...
    MAN11844-8
    SKU:
    MAN11844-8
    Availability:
    Ships Same Business Day
    Weight:
    2.63 LBS
    MFG Part #:
    11844-8
    $301.07
    Qty in Cart: 0
    Quantity:
    Price:
    $301.07
    Subtotal:
  • SBC S/D 2.020in Intake Valves MAN11826-8

    Manley SBC S/D 2.020in Intake Valves 11826-8

    MANLEY

    $301.07
    Built for sustained high-RPM operation and extreme cylinder pressures, these Manley intake valves are engineered to withstand the demands of severe-duty racing applications. The stainless steel construction resists thermal fatigue and corrosion, ensuring...
    MAN11826-8
    SKU:
    MAN11826-8
    Availability:
    Ships Same Business Day
    Weight:
    2.56 LBS
    MFG Part #:
    11826-8
    Qty in Cart: 0
    Quantity:
    Price:
    $301.07
    Subtotal:
  • SBC P/F 2.055in Intake Valves MAN11824-8

    Manley SBC P/F 2.055in Intake Valves 11824-8

    MANLEY

    $301.07
    Manley's SBC intake valves are engineered for sustained high-RPM operation where factory valves fail. Built from stainless steel and precision-manufactured to exact tolerances, these valves deliver reliable sealing and consistent flow characteristics...
    MAN11824-8
    SKU:
    MAN11824-8
    Availability:
    Ships Same Business Day
    Weight:
    2.45 LBS
    MFG Part #:
    11824-8
    $301.07
    Qty in Cart: 0
    Quantity:
    Price:
    $301.07
    Subtotal:
  • SBC P/F 1.600in Exhaust Valves MAN11823-8

    Manley SBC P/F 1.600in Exhaust Valves 11823-8

    MANLEY

    $301.07
    If you're building a serious small-block Chevy engine, valve quality directly impacts combustion efficiency, heat dissipation, and long-term reliability under sustained high RPM operation. Manley's stainless steel exhaust valves are engineered for severe...
    MAN11823-8
    SKU:
    MAN11823-8
    Availability:
    Ships Same Business Day
    Weight:
    2.13 LBS
    MFG Part #:
    11823-8
    $301.07
    Qty in Cart: 0
    Quantity:
    Price:
    $301.07
    Subtotal:
  • SBC R/M 2.055in Intake Valves MAN11810-8

    Manley SBC R/M 2.055in Intake Valves 11810-8

    MANLEY

    $188.69
    When you're building or refreshing a Small Block Chevy engine destined for the track, valve quality directly impacts combustion efficiency and rev capability. Manley's Race Master intake valves deliver the precision engineering and material integrity...
    MAN11810-8
    SKU:
    MAN11810-8
    Availability:
    Ships Same Business Day
    Weight:
    2.62 LBS
    MFG Part #:
    11810-8
    $188.69
    Qty in Cart: 0
    Quantity:
    Price:
    $188.69
    Subtotal:
  • SBC R/M 2.080in Intake Valves MAN11808-8

    Manley SBC R/M 2.080in Intake Valves 11808-8

    MANLEY

    $188.69
    If you're building or rebuilding a Small Block Chevy engine for serious track duty, valve quality directly impacts cylinder head flow, combustion efficiency, and reliability under sustained high RPM operation. Manley's Race Master intake valves are...
    MAN11808-8
    SKU:
    MAN11808-8
    Availability:
    Ships Same Business Day
    Weight:
    2.60 LBS
    MFG Part #:
    11808-8
    $188.69
    Qty in Cart: 0
    Quantity:
    Price:
    $188.69
    Subtotal:
  • SBC R/M 2.055in Intake Valves MAN11806-8

    Manley SBC R/M 2.055in Intake Valves 11806-8

    MANLEY

    $188.69
    If you're building or rebuilding a high-performance small block Chevy, valve quality directly impacts combustion efficiency, heat dissipation, and sustained RPM capability. Manley's Race Master intake valves deliver the precision tolerances and material...
    MAN11806-8
    SKU:
    MAN11806-8
    Availability:
    Ships Same Business Day
    Weight:
    2.55 LBS
    MFG Part #:
    11806-8
    $188.69
    Qty in Cart: 0
    Quantity:
    Price:
    $188.69
    Subtotal:
  • Ford 2.3L R/M 1.590in Exhaust Valves MAN11793-4

    Manley Ford 2.3L R/M 1.590in Exhaust Valves 11793-4

    MANLEY

    $94.34
    Manley's Race Master exhaust valves deliver the precision engineering required for high-RPM Ford 2.3L competition builds. Constructed from premium stainless steel, these valves are engineered to handle sustained boost and aggressive cam profiles without...
    MAN11793-4
    SKU:
    MAN11793-4
    Availability:
    Ships Same Business Day
    Weight:
    0.98 LBS
    MFG Part #:
    11793-4
    $94.34
    Qty in Cart: 0
    Quantity:
    Price:
    $94.34
    Subtotal:
  • Ford 2.3L R/M 1.890in Intake Valves MAN11792-4

    Manley Ford 2.3L R/M 1.890in Intake Valves 11792-4

    MANLEY

    $94.34
    If you're building or refreshing a Ford 2.3L engine for street or strip duty, these Manley intake valves are engineered to handle sustained high RPM loads without sacrificing reliability. The stainless steel construction resists thermal fatigue and...
    MAN11792-4
    SKU:
    MAN11792-4
    Availability:
    Ships Same Business Day
    Weight:
    0.90 LBS
    MFG Part #:
    11792-4
    $94.34
    Qty in Cart: 0
    Quantity:
    Price:
    $94.34
    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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