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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
  • Automatic Thermostat Switch DER15721

    Derale Automatic Thermostat Switch 15721

    DERALE

    $47.87
    Precise coolant temperature management is essential for maintaining optimal engine performance and preventing thermal stress during extended track sessions or high-demand driving. The Derale Automatic Thermostat Switch 15721 automates fan engagement...
    DER15721
    SKU:
    DER15721
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    MFG Part #:
    15721
    $47.87
    Qty in Cart: 0
    Quantity:
    Price:
    $47.87
    Subtotal:
  • 11/32 Intake Valves - 2.180 DELIV2180-6T-CRST-8

    11/32 Intake Valves - 2.180 IV2180-6T-CRST-8

    DEL WEST

    $1,321.99
    Titanium intake valves are essential for maximizing flow efficiency and thermal management in high-revving Small Block Chevy engines. These valves deliver superior durability and lighter reciprocating mass compared to steel alternatives, allowing your...
    DELIV2180-6T-CRST-8
    SKU:
    DELIV2180-6T-CRST-8
    Availability:
    Ships Same Business Day
    Weight:
    2.32 LBS
    MFG Part #:
    IV2180-6T-CRST-8
    $1,321.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,321.99
    Subtotal:
  • 11/32 Intake Valves - 2.100 DELIV2100-2T-CRST-8

    11/32 Intake Valves - 2.100 IV2100-2T-CRST-8

    DEL WEST

    $1,321.99
    Titanium intake valves are essential for any Small Block Chevy build targeting sustained high RPM performance and thermal stability. These 11/32 stem valves reduce reciprocating mass compared to steel alternatives, allowing your engine to rev harder and...
    DELIV2100-2T-CRST-8
    SKU:
    DELIV2100-2T-CRST-8
    Availability:
    Ships Same Business Day
    Weight:
    2.15 LBS
    MFG Part #:
    IV2100-2T-CRST-8
    $1,321.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,321.99
    Subtotal:
  • 11/32 Intake Valves - 2.080 DELIV2080-2T-CRST-8

    11/32 Intake Valves - 2.080 IV2080-2T-CRST-8

    DEL WEST

    $1,321.99
    Titanium intake valves are essential for maximizing flow efficiency and withstanding the thermal stress of high-RPM engine operation. These 2.080" head valves deliver superior durability compared to standard steel alternatives, allowing you to push your...
    DELIV2080-2T-CRST-8
    SKU:
    DELIV2080-2T-CRST-8
    Availability:
    Ships Same Business Day
    Weight:
    2.17 LBS
    MFG Part #:
    IV2080-2T-CRST-8
    $1,321.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,321.99
    Subtotal:
  • 11/32 Intake Valves - 2.080 DELIV2080-1T-CRST-8

    11/32 Intake Valves - 2.080 IV2080-1T-CRST-8

    DEL WEST

    $1,321.99
    Titanium intake valves are essential for any serious small block engine build where reliability and sustained RPM capability matter. By reducing reciprocating mass compared to steel counterparts, these valves allow your engine to breathe more efficiently...
    DELIV2080-1T-CRST-8
    SKU:
    DELIV2080-1T-CRST-8
    Availability:
    Ships Same Business Day
    Weight:
    2.09 LBS
    MFG Part #:
    IV2080-1T-CRST-8
    $1,321.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,321.99
    Subtotal:
  • 11/32 Exhaust Valves - 1.625 DELEV1625-6T-CRST-8

    11/32 Exhaust Valves - 1.625 EV1625-6T-CRST-8

    DEL WEST

    $1,355.99
    Titanium exhaust valves are essential for any small-block Chevy build targeting sustained high RPM operation and thermal stability. Unlike cast iron alternatives, titanium construction reduces valve mass, allowing for faster valve actuation and lower...
    DELEV1625-6T-CRST-8
    SKU:
    DELEV1625-6T-CRST-8
    Availability:
    Ships Same Business Day
    Weight:
    1.95 LBS
    MFG Part #:
    EV1625-6T-CRST-8
    $1,355.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,355.99
    Subtotal:
  • 11/32 Exhaust Valves - 1.600 DELEV1600-2T-CRST-8

    11/32 Exhaust Valves - 1.600 EV1600-2T-CRST-8

    DEL WEST

    $1,355.99
    Titanium exhaust valves are essential for maximizing flow efficiency and withstanding sustained high-temperature combustion cycles in serious racing applications. These 1.600-head valves deliver superior durability compared to stock steel units, reducing...
    DELEV1600-2T-CRST-8
    SKU:
    DELEV1600-2T-CRST-8
    Availability:
    Ships Same Business Day
    Weight:
    1.88 LBS
    MFG Part #:
    EV1600-2T-CRST-8
    $1,355.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,355.99
    Subtotal:
  • Super 7 Shoulder V/L - 5/16 +.050 Radius DEL794-C-16

    Super 7 Shoulder V/L - 5/16 +.050 Radius LX-DW794-C-16

    DEL WEST

    $301.99
    Titanium valve locks are essential for high-RPM applications where spring pressure and inertial loads demand absolute reliability. The Super 7's 7-degree shoulder geometry and +.050 height offset deliver optimized valve train geometry while the machined...
    DEL794-C-16
    SKU:
    DEL794-C-16
    Availability:
    Ships Same Business Day
    Weight:
    0.19 LBS
    MFG Part #:
    LX-DW794-C-16
    $301.99
    Qty in Cart: 0
    Quantity:
    Price:
    $301.99
    Subtotal:
  • Super 7 Shoulder V/L - 5/16 Std. Radius DEL793-C-16

    Super 7 Shoulder V/L - 5/16 Std. Radius LX-DW793-C-16

    DEL WEST

    $301.99
    Valve locks are critical to engine reliability, especially under high-rpm conditions where valve float can destroy your entire top-end. These Super 7 titanium locks deliver the secure, consistent valve control you need for forced-induction builds,...
    DEL793-C-16
    SKU:
    DEL793-C-16
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    LX-DW793-C-16
    $301.99
    Qty in Cart: 0
    Quantity:
    Price:
    $301.99
    Subtotal:
  • Super 7 Shoulder V/L - 11/32 Std. Radius DEL790-C-16

    Super 7 Shoulder V/L - 11/32 Std. Radius LX-DW790-C-16

    DEL WEST

    $301.99
    Valve lock failures compromise combustion efficiency and can leave you stranded mid-race. These Super 7 titanium shoulder locks are precision-machined to eliminate valve stem movement, ensuring consistent sealing and maximum reliability under extreme RPM...
    DEL790-C-16
    SKU:
    DEL790-C-16
    Availability:
    Ships Same Business Day
    Weight:
    0.18 LBS
    MFG Part #:
    LX-DW790-C-16
    $301.99
    Qty in Cart: 0
    Quantity:
    Price:
    $301.99
    Subtotal:
  • Dual Spring Retainers - 1.450/1.140/.745 DEL515-LTW-16

    Dual Spring Retainers - 1.450/1.140/.745 RX-DW515-LTW-16

    DEL WEST

    $618.99
    Valve spring retainers are critical for high-RPM engine stability—they prevent spring surge and valve float that compromise power delivery and reliability. These titanium retainers shed unnecessary weight while maintaining the rigidity needed to control...
    DEL515-LTW-16
    SKU:
    DEL515-LTW-16
    Availability:
    Ships Same Business Day
    Weight:
    0.72 LBS
    MFG Part #:
    RX-DW515-LTW-16
    Qty in Cart: 0
    Quantity:
    Price:
    $618.99
    Subtotal:
  • Dual Spring Retainers - 1.500/1.140/.745 DEL515-16

    Dual Spring Retainers - 1.500/1.140/.745 RX-DW515-16

    DEL WEST

    $645.99
    Dual spring retainers are critical for maintaining valve train integrity under high RPM and aggressive lift profiles. These titanium retainers reduce rotational mass while providing the rigidity needed to prevent spring surge and valve float in extreme...
    DEL515-16
    SKU:
    DEL515-16
    Availability:
    Ships Same Business Day
    Weight:
    0.79 LBS
    MFG Part #:
    RX-DW515-16
    Qty in Cart: 0
    Quantity:
    Price:
    $645.99
    Subtotal:
  • Valve Springs - 604 Crate Engine CRO68135-16

    Valve Springs - 604 Crate Engine 68135-16

    CROWER

    $227.99
    Valve springs are critical to maintaining consistent lift and preventing valve float across your entire RPM range—especially when running a high-output 604 crate engine that demands reliable, repeatable performance. A worn or mismatched set will...
    CRO68135-16
    SKU:
    CRO68135-16
    Availability:
    Ships Same Business Day
    Weight:
    3.62 LBS
    MFG Part #:
    68135-16
    $227.99
    Qty in Cart: 0
    Quantity:
    Price:
    $227.99
    Subtotal:
  • Solid Lifters - Chevy w/Coolface Oiling CRO66900X980-16

    Solid Lifters - Chevy w/Coolface Oiling 66900X980-16

    CROWER

    $249.99
    Solid lifters deliver the reliability and precision that high-RPM engines demand, eliminating the compliance issues of hydraulic designs while maintaining consistent valve timing under extreme conditions. The Coolface oiling technology manages heat and...
    CRO66900X980-16
    SKU:
    CRO66900X980-16
    Availability:
    Ships Same Business Day
    Weight:
    3.16 LBS
    MFG Part #:
    66900X980-16
    Qty in Cart: 0
    Quantity:
    Price:
    $249.99
    Subtotal:
  • Solid Lifters - Chevy  CRO66900-16

    Solid Lifters - Chevy 66900-16

    CROWER

    $152.99
    Solid lifters are essential for high-RPM builds and race engines where valve train stability and precision matter most. Unlike hydraulic lifters, these mechanical flat tappet lifters eliminate oil pressure dependency, delivering consistent valve...
    CRO66900-16
    SKU:
    CRO66900-16
    Availability:
    Ships Same Business Day
    Weight:
    3.15 LBS
    MFG Part #:
    66900-16
    $152.99
    Qty in Cart: 0
    Quantity:
    Price:
    $152.99
    Subtotal:
  • Roller Lifters  - SBC w/Offset Intake CRO66292X903-16

    Roller Lifters - SBC w/Offset Intake 66292X903-16

    CROWER

    $1,070.99
    Mechanical roller lifters are essential for serious small-block Chevy builds demanding maximum valve lift consistency and durability under extreme RPM conditions. This severe-duty set eliminates the friction losses and wear patterns inherent to...
    CRO66292X903-16
    SKU:
    CRO66292X903-16
    Availability:
    Ships Same Business Day
    Weight:
    4.85 LBS
    MFG Part #:
    66292X903-16
    $1,070.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,070.99
    Subtotal:
  • Roller Lifters - SBC Offset CRO66292X874-16

    Roller Lifters - SBC Offset 66292X874-16

    CROWER

    $844.99
    Mechanical roller lifters are essential for high-RPM Small Block Chevy builds where reliability and valve train stability matter. The severe duty cutaway design reduces weight while maintaining durability, and the precision offset geometry ensures proper...
    CRO66292X874-16
    SKU:
    CRO66292X874-16
    Availability:
    Ships Same Business Day
    Weight:
    4.73 LBS
    MFG Part #:
    66292X874-16
    $844.99
    Qty in Cart: 0
    Quantity:
    Price:
    $844.99
    Subtotal:
  • Roller Lifters E/M - SBC w/Offset Intake CRO66292X842E-16

    Roller Lifters E/M - SBC w/Offset Intake 66292X842E-16

    CROWER

    $1,334.99
    Mechanical roller lifters are essential for maximizing valve lift accuracy and reducing parasitic losses in your Small Block Chevy engine. The EnduraMax construction in this set delivers superior durability under sustained high-RPM operation, while the...
    CRO66292X842E-16
    SKU:
    CRO66292X842E-16
    Availability:
    Ships Same Business Day
    Weight:
    4.60 LBS
    MFG Part #:
    66292X842E-16
    $1,334.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,334.99
    Subtotal:
  • Roller Lifters - SBC Offset w/Pin Oiling CRO66292H-16

    Roller Lifters - SBC Offset w/Pin Oiling 66292H-16

    CROWER

    $1,153.99
    Roller lifters are essential for any serious small block Chevy engine build, delivering consistent valve actuation and reduced friction compared to flat-tappet designs. The offset configuration and pin oiling in this set ensure reliable performance under...
    CRO66292H-16
    SKU:
    CRO66292H-16
    Availability:
    Ships Same Business Day
    Weight:
    4.52 LBS
    MFG Part #:
    66292H-16
    $1,153.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,153.99
    Subtotal:
  • Roller Lifters - SBC Offset CRO66292-16

    Roller Lifters - SBC Offset 66292-16

    CROWER

    $921.99
    Mechanical roller lifters deliver the high-RPM reliability and reduced friction that separates winners from the rest. If you're building a serious small-block Chevy engine for competition or high-output street duty, these severe-duty cutaway rollers are...
    CRO66292-16
    SKU:
    CRO66292-16
    Availability:
    Ships Same Business Day
    Weight:
    4.50 LBS
    MFG Part #:
    66292-16
    $921.99
    Qty in Cart: 0
    Quantity:
    Price:
    $921.99
    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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