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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
  • GP Piston Ring Set 4.170 Bore 1/16 1/16 3/16 TOTCR0690GP-45

    Total Seal GP Piston Ring Set 4.170 Bore 1/16 1/16 3/16 CR0690GP 45

    TOTAL SEAL

    $346.63
    Total Seal's GP Piston Ring Set delivers the sealing precision and blowby control that separates competitive engines from the rest. Whether you're building a high-revving naturally aspirated engine or fine-tuning a forced induction platform, these rings...
    TOTCR0690GP-45
    SKU:
    TOTCR0690GP-45
    Availability:
    Ships Same Business Day
    Weight:
    1.08 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $346.63
    Subtotal:
  • SBC FT Piston Set 4.020 Bore GM 602 Crate Engine SRP324859

    SBC FT Piston Set 4.020 Bore GM 602 Crate Engine 324859

    SPORTSMAN RACING PRODUCTS

    $849.99
    If you're running a GM Performance 602 crate engine and need reliable compression and controlled combustion, this forged piston set delivers the precision engineering required for consistent performance. The minus 10.0 cc dish and optimized ring grooves...
    SRP324859
    SKU:
    SRP324859
    Availability:
    Ships Same Business Day
    Weight:
    16.00 LBS
    $849.99
    Qty in Cart: 0
    Quantity:
    Price:
    $849.99
    Subtotal:
  • SBF Roller Rocker Arm Set  1.6 Ratio 7/16 Stud SHPS4102

    SBF Roller Rocker Arm Set 1.6 Ratio 7/16 Stud S4102

    SHARP ROCKERS

    $425.99
    If you're building or rebuilding a Small Block Ford engine, roller rocker arms are essential for maximizing valve control and reducing parasitic drag on your valvetrain. The 1.6:1 ratio geometry increases valve lift while the full roller design cuts...
    SHPS4102
    SKU:
    SHPS4102
    Availability:
    Ships Same Business Day
    Weight:
    6.90 LBS
    $425.99
    Qty in Cart: 0
    Quantity:
    Price:
    $425.99
    Subtotal:
  • Sandwich Filter Adapter 22mmx1.5mm Filter Thread SET19-SPT76-22-180-22

    Sandwich Filter Adapter 22mmx1.5mm Filter Thread 19-SPT76-22-180-22

    SETRAB OIL COOLERS

    $103.53
    A sandwich filter adapter is essential for integrating modern oil filtration or cooling systems into custom engine builds where direct-mount options don't fit your layout. This 22mm x 1.5mm threaded adapter maintains proper flow rates and pressure...
    SET19-SPT76-22-180-22
    SKU:
    SET19-SPT76-22-180-22
    Availability:
    Ships Same Business Day
    Weight:
    0.70 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $103.53
    Subtotal:
  • SBC 4340 Forged Crank - 4.000 Stroke SCA7-400-4000-6000

    SBC 4340 Forged Crank - 4.000 Stroke 7-400-4000-6000

    SCAT ENTERPRISES

    $1,004.99
    A forged crankshaft is the foundation of any reliable high-revving engine build. The Excalibur SBC 4340 crankshaft delivers the stroke and material strength needed to handle sustained performance demands without sacrificing durability. With external...
    SCA7-400-4000-6000
    SKU:
    SCA7-400-4000-6000
    Availability:
    Ships Same Business Day
    Weight:
    54.00 LBS
    $1,004.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,004.99
    Subtotal:
  • Ford 351C 4340 Forged Crank 3.500 Stroke SCA4-351C-3500-6000

    Ford 351C 4340 Forged Crank 3.500 Stroke 4-351C-3500-6000

    SCAT ENTERPRISES

    $1,106.99
    A forged steel crankshaft is the backbone of any high-revving engine build, and this 351C unit delivers the strength and precision needed to handle aggressive power levels without compromising reliability. Built from 4340 forged steel with a 3.500-inch...
    SCA4-351C-3500-6000
    SKU:
    SCA4-351C-3500-6000
    Availability:
    Ships Same Business Day
    Weight:
    54.00 LBS
    $1,106.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,106.99
    Subtotal:
  • LS Aluminum Block - 4.120 Bore 9.240 D/H RHS54903U

    LS Aluminum Block - 4.120 Bore 9.240 D/H 54903U

    RACING HEAD SERVICE

    $6,575.95
    Building a high-displacement LS engine demands a foundation that can handle increased bore diameters and sustained power delivery. This aluminum LS block gives you the structural integrity and lightweight advantage you need to support aggressive builds...
    RHS54903U
    SKU:
    RHS54903U
    Availability:
    Ships Same Business Day
    Weight:
    140.00 LBS
    $6,575.95
    Qty in Cart: 0
    Quantity:
    Price:
    $6,575.95
    Subtotal:
  • Oil Filter Mount  3/4in- 16  Ports: 1/2in NPT PRM1711

    Oil Filter Mount 3/4in- 16 Ports: 1/2in NPT 1711

    PERMA-COOL

    $39.72
    A remote oil filter mount gives you the flexibility to relocate your filter away from the engine bay, reducing underhood heat and simplifying maintenance access. This aluminum mount integrates seamlessly into custom cooling systems and tight engine...
    PRM1711
    SKU:
    PRM1711
    Availability:
    Ships Same Business Day
    Weight:
    2.00 LBS
    $39.72
    Qty in Cart: 0
    Quantity:
    Price:
    $39.72
    Subtotal:
  • Std. Oil Filter Relocati on Kit PRM10691

    Std. Oil Filter Relocati on Kit 10691

    PERMA-COOL

    $95.90
    Remote oil filtration keeps your engine bay cooler and cleaner by relocating the filter away from heat sources, improving oil circulation and reducing ambient temperatures around critical engine components. This bolt-on kit eliminates the need for custom...
    PRM10691
    SKU:
    PRM10691
    Availability:
    Ships Same Business Day
    Weight:
    3.40 LBS
    $95.90
    Qty in Cart: 0
    Quantity:
    Price:
    $95.90
    Subtotal:
  • GM OE LS Rocker Trunnion Upgrade Kit PQX1213462

    GM OE LS Rocker Trunnion Upgrade Kit 1213462

    PRW INDUSTRIES, INC.

    $138.68
    Stock LS rocker arms experience wear under sustained high-RPM operation, leading to valve timing degradation and potential catastrophic failure. This chromoly trunnion upgrade kit addresses that weakness by replacing factory components with hardened,...
    PQX1213462
    SKU:
    PQX1213462
    Availability:
    Ships Same Business Day
    Weight:
    3.80 LBS
    $138.68
    Qty in Cart: 0
    Quantity:
    Price:
    $138.68
    Subtotal:
  • SBC Billet LW Connecting Rods 6.000 w/ 3/8 Bolts OLVC6000Q4UL8

    SBC Billet LW Connecting Rods 6.000 w/ 3/8 Bolts C6000Q4UL8

    OLIVER RODS

    $1,599.97
    If you're building a high-RPM small-block Chevy that demands reliability under extreme load, billet connecting rods are non-negotiable. These CNC-machined components eliminate the weak points of cast iron stock rods, giving you the structural integrity...
    OLVC6000Q4UL8
    SKU:
    OLVC6000Q4UL8
    Availability:
    Ships Same Business Day
    Weight:
    11.05 LBS
    $1,599.97
    Qty in Cart: 0
    Quantity:
    Price:
    $1,599.97
    Subtotal:
  • Billet Alm Valve Covers GM LT1/LT4/L86 MOR68494

    Moroso Billet Alm Valve Covers GM LT1/LT4/L86 68494

    MOROSO

    $1,198.99
    A quality valve cover isn't just about aesthetics—it protects your engine's most critical components while providing reliable access for maintenance. Moroso's billet aluminum design offers superior heat dissipation and durability compared to cast...
    MOR68494
    SKU:
    MOR68494
    Availability:
    Ships Same Business Day
    Weight:
    5.00 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $1,198.99
    Subtotal:
  • SBC Valve Cover Spacers w/Spring Oiling Rails MOR68330

    Moroso SBC Valve Cover Spacers w/Spring Oiling Rails 68330

    MOROSO

    $608.99
    Proper valve cover spacing and rocker arm oiling are critical for engine reliability under sustained rpm and boost conditions. The Moroso SBC Valve Cover Spacers with Spring Oiling Rails eliminate guesswork by delivering consistent oil flow to rocker...
    MOR68330
    SKU:
    MOR68330
    Availability:
    Ships Same Business Day
    Weight:
    2.80 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $608.99
    Subtotal:
  • LS1 High Pressure Oil Pump MEL10295

    LS1 High Pressure Oil Pump 10295

    MELLING

    $155.99
    Consistent oil pressure is non-negotiable when you're pushing your LS engine to its limits. The LS1 High Pressure Oil Pump 10295 delivers the flow and pressure your engine demands during sustained high-RPM operation, protecting critical bearing surfaces...
    MEL10295
    SKU:
    MEL10295
    Availability:
    Ships Same Business Day
    Weight:
    2.63 LBS
    $155.99
    Qty in Cart: 0
    Quantity:
    Price:
    $155.99
    Subtotal:
  • LS1 S/D 1.550 Exhaust Valves MAN11673-8

    Manley LS1 S/D 1.550 Exhaust Valves 11673-8

    MANLEY

    $301.07
    When you're building or rebuilding an LS engine for serious power, valve quality directly impacts combustion efficiency, durability, and peak performance. Manley's stainless steel exhaust valves are engineered to withstand extreme temperatures and...
    MAN11673-8
    SKU:
    MAN11673-8
    Availability:
    Ships Same Business Day
    Weight:
    1.99 LBS
    $301.07
    Qty in Cart: 0
    Quantity:
    Price:
    $301.07
    Subtotal:
  • SBF PowerPak F/T Piston Set 4.125 Bore MAH930244825

    SBF PowerPak F/T Piston Set 4.125 Bore 930244825

    MAHLE PISTONS

    $790.44
    If you're building a high-compression Small Block Ford engine, piston selection directly impacts combustion efficiency, detonation control, and power output. The SBF PowerPak F/T Piston Set delivers a reliable, forged construction with a flat-top design...
    MAH930244825
    SKU:
    MAH930244825
    Availability:
    Ships Same Business Day
    Weight:
    15.00 LBS
    $790.44
    Qty in Cart: 0
    Quantity:
    Price:
    $790.44
    Subtotal:
  • Piston Ring Set 4.000 1.5 1.5 3.0mm MAH4005MS-15

    Piston Ring Set 4.000 1.5 1.5 3.0mm 4005MS-15

    MAHLE PISTONS

    $158.86
    Piston rings are critical to engine sealing, compression, and oil control—neglecting quality rings leads to blow-by, power loss, and accelerated wear. The 4005MS-15 delivers plasma-moly coated reliability across all eight cylinders, maintaining...
    MAH4005MS-15
    SKU:
    MAH4005MS-15
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    $158.86
    Qty in Cart: 0
    Quantity:
    Price:
    $158.86
    Subtotal:
  • Main Bearing Set  M77MS1432P30

    Main Bearing Set MS-1432P-30

    MICHIGAN 77

    $77.99
    A quality main bearing set is the foundation of any reliable engine build—without proper bearing clearance and support, even the strongest bottom end will fail prematurely under load. The MS-1432P-30 delivers OEM-level precision with 0.030" undersize...
    M77MS1432P30
    SKU:
    M77MS1432P30
    Availability:
    Ships Same Business Day
    Weight:
    1.53 LBS
    $77.99
    Qty in Cart: 0
    Quantity:
    Price:
    $77.99
    Subtotal:
  • Coated Rod Bearing  M77CB663HNK20

    Coated Rod Bearing CB-663HNK-20

    MICHIGAN 77

    $14.99
    Connecting rod bearings are critical to engine longevity and reliability—they're the foundation that keeps your crankshaft spinning smoothly under extreme loads. The CB-663HNK-20 delivers precision-engineered performance with a durable coating that...
    M77CB663HNK20
    SKU:
    M77CB663HNK20
    Availability:
    Ships Same Business Day
    Weight:
    0.12 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $14.99
    Subtotal:
  • Rod Bearing - SBC with Honda 1.888in Journal M77CB1663H1 rod bearing - sbc with honda 1.888in journal cb-1663h-1

    Rod Bearing - SBC with Honda 1.888in Journal CB-1663H-1

    MAHLE ORIGINAL/CLEVITE

    $17.49
    Precision rod bearings are critical to engine reliability, especially when you're pushing your Small Block Chevy to its limits. This H-Series bearing delivers the tight tolerances and durable construction needed for consistent performance under sustained...
    M77CB1663H1
    SKU:
    M77CB1663H1
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $17.49
    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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