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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
  • Piston Ring Set 4.030 1/16 1/16 3/16 HAS2M5523035

    Hastings Piston Ring Set 4.030 1/16 1/16 3/16 2M5523035

    HASTINGS

    $123.99
    Piston rings are the critical seal between your pistons and cylinder walls—without proper compression and blow-by control, you're losing power and risking engine damage. The Hastings 4.030 Piston Ring Set delivers reliable sealing with moly-coated rings...
    HAS2M5523035
    SKU:
    HAS2M5523035
    Availability:
    Ships Same Business Day
    Weight:
    1.10 LBS
    MFG Part #:
    2M5523035
    $123.99
    Qty in Cart: 0
    Quantity:
    Price:
    $123.99
    Subtotal:
  • Piston Ring Set 4.030 1/16 1/16 3/16 HAS2M5523030

    Hastings Piston Ring Set 4.030 1/16 1/16 3/16 2M5523030

    HASTINGS

    $123.99
    Piston rings are the unsung heroes of engine performance—they seal combustion pressure, regulate oil consumption, and maintain critical compression ratios. Hastings' moly-coated ring set is engineered for durability and consistent blowby control across...
    HAS2M5523030
    SKU:
    HAS2M5523030
    Availability:
    Ships Same Business Day
    Weight:
    1.12 LBS
    MFG Part #:
    2M5523030
    $123.99
    Qty in Cart: 0
    Quantity:
    Price:
    $123.99
    Subtotal:
  • Piston Ring Set 4.000 1/16 1/16 3/16 HAS2M5523005

    Hastings Piston Ring Set 4.000 1/16 1/16 3/16 2M5523005

    HASTINGS

    $138.99
    Piston rings are critical to engine efficiency, sealing combustion pressure while managing oil consumption across the entire RPM range. The Hastings 4.000 Piston Ring Set delivers reliable compression and blow-by control with proven moly-faced technology...
    HAS2M5523005
    SKU:
    HAS2M5523005
    Availability:
    Ships Same Business Day
    Weight:
    1.08 LBS
    MFG Part #:
    2M5523005
    $138.99
    Qty in Cart: 0
    Quantity:
    Price:
    $138.99
    Subtotal:
  • Piston Ring Set 4.000 1/16 1/16 3/16 HAS2M5523

    Hastings Piston Ring Set 4.000 1/16 1/16 3/16 2M5523

    HASTINGS

    $123.99
    Piston rings are the critical seal between your pistons and cylinder walls—worn or substandard rings lead to blow-by, oil consumption, and lost compression that tanks performance. The Hastings 2M5523 delivers reliable sealing with moly-coated rings...
    HAS2M5523
    SKU:
    HAS2M5523
    Availability:
    Ships Same Business Day
    Weight:
    1.08 LBS
    MFG Part #:
    2M5523
    $123.99
    Qty in Cart: 0
    Quantity:
    Price:
    $123.99
    Subtotal:
  • Piston Ring Set 4.060 1/16 1/16 1/8 HAS2M5521065

    Hastings Piston Ring Set 4.060 1/16 1/16 1/8 2M5521065

    HASTINGS

    $155.99
    Piston rings are critical to engine longevity and performance—they seal combustion pressure, control oil consumption, and maintain compression where it matters most. The Hastings 4.060 ring set delivers reliable sealing with moly-faced construction...
    HAS2M5521065
    SKU:
    HAS2M5521065
    Availability:
    Ships Same Business Day
    Weight:
    0.99 LBS
    MFG Part #:
    2M5521065
    $155.99
    Qty in Cart: 0
    Quantity:
    Price:
    $155.99
    Subtotal:
  • Piston Ring Set 4.030 1/16 1/16 1/8 HAS2M5521035

    Hastings Piston Ring Set 4.030 1/16 1/16 1/8 2M5521035

    HASTINGS

    $137.99
    Piston rings are the critical seal between your pistons and cylinder walls—neglect them, and you're looking at blow-by, lost compression, and accelerated wear. The Hastings 4.030 ring set delivers reliable sealing and oil control with moly-coated...
    HAS2M5521035
    SKU:
    HAS2M5521035
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    MFG Part #:
    2M5521035
    $137.99
    Qty in Cart: 0
    Quantity:
    Price:
    $137.99
    Subtotal:
  • Piston Ring Set 4.125 5/64 5/64 3/16 HAS2M5513005

    Hastings Piston Ring Set 4.125 5/64 5/64 3/16 2M5513005

    HASTINGS

    $154.99
    Piston rings are the critical seal between your pistons and cylinder walls—wear them out, and you're looking at blow-by, oil consumption, and lost compression that tanks your engine's performance. The Hastings 2M5513005 delivers OEM-quality sealing with...
    HAS2M5513005
    SKU:
    HAS2M5513005
    Availability:
    Ships Same Business Day
    Weight:
    1.30 LBS
    MFG Part #:
    2M5513005
    $154.99
    Qty in Cart: 0
    Quantity:
    Price:
    $154.99
    Subtotal:
  • Piston Ring Set 4.155 1/16 1/16 3/16 HAS2M5510035

    Hastings Piston Ring Set 4.155 1/16 1/16 3/16 2M5510035

    HASTINGS

    $144.99
    Piston rings are critical to engine sealing, compression retention, and oil control—and worn or inadequate rings will destroy your performance gains and fuel efficiency. The Hastings 4.155 Piston Ring Set delivers precision file-fit construction with...
    HAS2M5510035
    SKU:
    HAS2M5510035
    Availability:
    Ships Same Business Day
    Weight:
    0.86 LBS
    MFG Part #:
    2M5510035
    Qty in Cart: 0
    Quantity:
    Price:
    $144.99
    Subtotal:
  • Piston Ring Set 4.040 5/64 5/64 3/16 HAS2M5508045

    Hastings Piston Ring Set 4.040 5/64 5/64 3/16 2M5508045

    HASTINGS

    $139.99
    Piston rings are critical to engine sealing and compression—worn or improper rings lead to blow-by, oil consumption, and lost horsepower. The Hastings 4.040 ring set delivers precision file-fit construction with moly-coated surfaces for reduced friction...
    HAS2M5508045
    SKU:
    HAS2M5508045
    Availability:
    Ships Same Business Day
    Weight:
    1.24 LBS
    MFG Part #:
    2M5508045
    $139.99
    Qty in Cart: 0
    Quantity:
    Price:
    $139.99
    Subtotal:
  • Piston Ring Set 4.030 5/64 5/64 3/16 HAS2M5508035

    Hastings Piston Ring Set 4.030 5/64 5/64 3/16 2M5508035

    HASTINGS

    $134.99
    Piston rings are critical to engine performance—they seal combustion pressure, regulate oil consumption, and maintain compression efficiency. A quality ring set like this Hastings unit ensures proper blow-by control and extended engine life, whether...
    HAS2M5508035
    SKU:
    HAS2M5508035
    Availability:
    Ships Same Business Day
    Weight:
    0.92 LBS
    MFG Part #:
    2M5508035
    $134.99
    Qty in Cart: 0
    Quantity:
    Price:
    $134.99
    Subtotal:
  • Piston Ring Set 4.000 5/64 5/64 3/16 HAS2M5508005

    Hastings Piston Ring Set 4.000 5/64 5/64 3/16 2M5508005

    HASTINGS

    $135.99
    Piston rings are the unsung workhorses of engine performance—they seal combustion pressure, regulate oil consumption, and maintain compression integrity. A worn or improper ring set compromises power output and increases blowby, making a quality...
    HAS2M5508005
    SKU:
    HAS2M5508005
    Availability:
    Ships Same Business Day
    Weight:
    1.23 LBS
    MFG Part #:
    2M5508005
    $135.99
    Qty in Cart: 0
    Quantity:
    Price:
    $135.99
    Subtotal:
  • Piston Ring Set 4.060 1/16 1/16 3/16 HAS2M5505065

    Hastings Piston Ring Set 4.060 1/16 1/16 3/16 2M5505065

    HASTINGS

    $133.99
    Piston rings are critical to engine performance—they seal combustion pressure, regulate oil consumption, and maintain compression integrity throughout the engine cycle. This Hastings ring set delivers the low-tension design and moly coating you need for...
    HAS2M5505065
    SKU:
    HAS2M5505065
    Availability:
    Ships Same Business Day
    Weight:
    1.02 LBS
    MFG Part #:
    2M5505065
    $133.99
    Qty in Cart: 0
    Quantity:
    Price:
    $133.99
    Subtotal:
  • Piston Ring Set 4.040 1/16 1/16 3/16 HAS2M5505045

    Hastings Piston Ring Set 4.040 1/16 1/16 3/16 2M5505045

    HASTINGS

    $131.99
    Piston rings are the critical seal between your pistons and cylinder walls—without proper sealing, you lose compression, oil control, and power. The Hastings 2M5505045 delivers reliable low-tension ring geometry designed for engines demanding consistent...
    HAS2M5505045
    SKU:
    HAS2M5505045
    Availability:
    Ships Same Business Day
    Weight:
    1.03 LBS
    MFG Part #:
    2M5505045
    Qty in Cart: 0
    Quantity:
    Price:
    $131.99
    Subtotal:
  • Piston Ring Set 4.030 1/16 1/16 3/16 HAS2M5505035

    Hastings Piston Ring Set 4.030 1/16 1/16 3/16 2M5505035

    HASTINGS

    $131.99
    Piston rings are the critical seal between your pistons and cylinder walls—compromising on quality means lost compression, increased blowby, and accelerated engine wear. The Hastings 2M5505035 delivers reliable sealing performance with moly-coated rings...
    HAS2M5505035
    SKU:
    HAS2M5505035
    Availability:
    Ships Same Business Day
    Weight:
    1.03 LBS
    MFG Part #:
    2M5505035
    $131.99
    Qty in Cart: 0
    Quantity:
    Price:
    $131.99
    Subtotal:
  • Aluminum V/C's - SBC LS Center-Bolt w/Hole GMP25534398

    Chevrolet Performance Aluminum V/C's - SBC LS Center-Bolt w/Hole 25534398

    CHEVROLET PERFORMANCE

    $197.56
    If you're running a serious LS build, factory valve covers won't cut it—they're restrictions waiting to happen. These Chevrolet Performance aluminum V/C's deliver the lightweight durability and clean aesthetics competition engines demand, while the...
    GMP25534398
    SKU:
    GMP25534398
    Availability:
    Ships Same Business Day
    Weight:
    3.89 LBS
    MFG Part #:
    25534398
    $197.56
    Qty in Cart: 0
    Quantity:
    Price:
    $197.56
    Subtotal:
  • SBC Hyd. Roller Camshaft Fastburn. GMP24502586

    Chevrolet Performance SBC Hyd. Roller Camshaft Fastburn. 24502586

    CHEVROLET PERFORMANCE

    $602.71
    The Chevrolet Performance SBC Hydraulic Roller Camshaft Fastburn is engineered for naturally aspirated small-block engines that demand aggressive top-end power without sacrificing low-end responsiveness. This hydraulic roller design delivers reliable,...
    GMP24502586
    SKU:
    GMP24502586
    Availability:
    Ships Same Business Day
    Weight:
    9.94 LBS
    MFG Part #:
    24502586
    $602.71
    Qty in Cart: 0
    Quantity:
    Price:
    $602.71
    Subtotal:
  • Valve Spring Retainers - LT1/LT4 (16) GMP19171528

    Chevrolet Performance Valve Spring Retainers - LT1/LT4 (16) 19171528

    CHEVROLET PERFORMANCE

    $29.84
    Valve spring retainers are critical to maintaining proper valve control and preventing float at high RPMs—especially in forced-induction or heavily modified LT1/LT4 engines. OEM retainers can wear or fail under sustained boost or aggressive cam profiles,...
    GMP19171528
    SKU:
    GMP19171528
    Availability:
    Ships Same Business Day
    Weight:
    0.58 LBS
    MFG Part #:
    19171528
    $29.84
    Qty in Cart: 0
    Quantity:
    Price:
    $29.84
    Subtotal:
  • Rear Main Seal Housing SBC w/1-Piece Rear Main GMP14088556

    Chevrolet Performance Rear Main Seal Housing SBC w/1-Piece Rear Main 14088556

    CHEVROLET PERFORMANCE

    $177.99
    A quality rear main seal housing is critical to preventing catastrophic oil leaks that can compromise engine performance and reliability. This Chevrolet Performance unit delivers OEM-level precision and durability, making it the ideal choice for...
    GMP14088556
    SKU:
    GMP14088556
    Availability:
    Ships Same Business Day
    Weight:
    0.95 LBS
    MFG Part #:
    14088556
    $177.99
    Qty in Cart: 0
    Quantity:
    Price:
    $177.99
    Subtotal:
  • SBC ZZ4 Crankshaft 3.480 Stroke 1pc Rear Main GMP12670965

    Chevrolet Performance SBC ZZ4 Crankshaft 3.480 Stroke 1pc Rear Main 12670965

    CHEVROLET PERFORMANCE

    $1,482.99
    If you're building or rebuilding a Small Block Chevy engine that demands reliability and consistent performance, a quality crankshaft is non-negotiable. The Chevrolet Performance SBC ZZ4 crankshaft delivers the stroke geometry and internal balance you...
    GMP12670965
    SKU:
    GMP12670965
    Availability:
    Ships Same Business Day
    Weight:
    65.00 LBS
    MFG Part #:
    12670965
    $1,482.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,482.99
    Subtotal:
  • 11/32 Valve Lock Set  GMP12495503

    Chevrolet Performance 11/32 Valve Lock Set 12495503

    CHEVROLET PERFORMANCE

    $25.12
    Valve locks are critical to maintaining proper valve train geometry and preventing costly float or jump at high RPM. This Chevrolet Performance set delivers OEM-equivalent precision and durability, ensuring your valve springs stay seated under extreme...
    GMP12495503
    SKU:
    GMP12495503
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    MFG Part #:
    12495503
    $25.12
    Qty in Cart: 0
    Quantity:
    Price:
    $25.12
    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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