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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
  • MAHLE Piston Ring Set 4.060 in Bore 0.043 in x 0.043 in x 3.0 mm Low Tension Plasma Moly 8-Cylinder MAH4065ML-043

    MAHLE Piston Ring Set 4.060 in Bore 0.043 in x 0.043 in x 3.0 mm Low Tension Plasma Moly 8-Cylinder MAH4065ML-043

    MAHLE PISTONS

    $219.06
    This MAHLE Motorsports piston ring set is engineered for 4.060-inch bore 8-cylinder engines, featuring a file-fit design for precise ring end gap adjustment. The set includes top and second rings with a thickness of 0.043 inches each, and a 3.0 mm thick...
    MAH4065ML-043
    SKU:
    MAH4065ML-043
    Availability:
    Ships Same Business Day
    Weight:
    0.66 LBS
    MFG Part #:
    4065ML-043
    $219.06
    Qty in Cart: 0
    Quantity:
    Price:
    $219.06
    Subtotal:
  • Mahle piston ring set 4.050 in bore 0.043 in x 0.043 in x 3.0 mm thick low tension plasma moly 8 cylinder kit 4055ML-043

    Mahle piston ring set 4.050 in bore 0.043 in x 0.043 in x 3.0 mm thick low tension plasma moly 8 cylinder kit 4055ML-043

    MAHLE PISTONS

    $219.06
    This MAHLE Performance Piston Ring Set is engineered for 4.050-inch bore engines, featuring file-fit rings with 0.043-inch top and second rings, and a 3.0mm thick low-tension oil ring. Designed for 8-cylinder engines, this set ensures optimal sealing and...
    MAH4055ML-043
    SKU:
    MAH4055ML-043
    Availability:
    Ships Same Business Day
    Weight:
    0.66 LBS
    MFG Part #:
    4055ML-043
    $219.06
    Qty in Cart: 0
    Quantity:
    Price:
    $219.06
    Subtotal:
  • Mahle piston ring set 4.040 in bore 1.5 x 1.5 x 3.0 mm MAH4045MS-15

    Mahle piston ring set 4.040 in bore 1.5 x 1.5 x 3.0 mm MAH4045MS-15

    MAHLE PISTONS

    $180.53
    This MAHLE Performance Piston Ring Set is engineered for 4.040-inch bores, featuring file-fit rings with dimensions of 1.5 x 1.5 x 3.0 mm. Designed for 8-cylinder engines, it includes top, second, and oil rings, ensuring optimal performance and...
    MAH4045MS-15
    SKU:
    MAH4045MS-15
    Availability:
    Ships Same Business Day
    Weight:
    0.79 LBS
    MFG Part #:
    4045MS-15
    $180.53
    Qty in Cart: 0
    Quantity:
    Price:
    $180.53
    Subtotal:
  • Mahle piston ring set 4.040 in bore file fit 0.043 in x 0.043 in x 3.0 mm thick low tension MAH4045ML-043

    Mahle piston ring set 4.040 in bore file fit 0.043 in x 0.043 in x 3.0 mm thick low tension MAH4045ML-043

    MAHLE PISTONS

    $219.06
    This MAHLE Motorsports piston ring set is engineered for 4.040-inch bore engines, featuring file-fit rings with dimensions of 0.043 inches by 0.043 inches and a 3.0 mm oil ring thickness. The set includes low-tension, ductile iron top and second rings...
    MAH4045ML-043
    SKU:
    MAH4045ML-043
    Availability:
    Ships Same Business Day
    Weight:
    0.65 LBS
    MFG Part #:
    4045ML-043
    $219.06
    Qty in Cart: 0
    Quantity:
    Price:
    $219.06
    Subtotal:
  • Mahle piston ring set 4.040 in bore 1/16 x 1/16 x 3/16 in thickness low tension ductile iron plasma moly MAH4045ML

    Mahle piston ring set 4.040 in bore 1/16 x 1/16 x 3/16 in thickness low tension ductile iron plasma moly MAH4045ML

    MAHLE PISTONS

    $134.15
    This MAHLE Motorsports piston ring set is engineered for 4.040-inch bore engines, featuring a file-fit design with low tension plasma moly rings. The set includes top and second rings measuring 1/16 inch in thickness and an oil ring at 3/16 inch,...
    MAH4045ML
    SKU:
    MAH4045ML
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    MFG Part #:
    4045ML
    $134.15
    Qty in Cart: 0
    Quantity:
    Price:
    $134.15
    Subtotal:
  • Mahle piston ring set 4.040 in bore 0.043 x 0.043 x 3.0 mm low tension plasma moly 8-cylinder MAH4040ML-043

    Mahle piston ring set 4.040 in bore 0.043 x 0.043 x 3.0 mm low tension plasma moly 8-cylinder MAH4040ML-043

    MAHLE PISTONS

    $219.06
    This MAHLE Performance Series piston ring set is engineered for 4.040-inch (102.616 mm) bore 8-cylinder engines, featuring a file-fit design with low tension rings. The set includes top and second rings measuring 0.043 inches (1.092 mm) in width and 3.0...
    MAH4040ML-043
    SKU:
    MAH4040ML-043
    Availability:
    Ships Same Business Day
    Weight:
    0.65 LBS
    MFG Part #:
    4040ML-043
    $219.06
    Qty in Cart: 0
    Quantity:
    Price:
    $219.06
    Subtotal:
  • Mahle piston ring set 4.030 in bore 1.5 x 1.5 x 3.0 mm standard tension MAH4035MS-15

    Mahle piston ring set 4.030 in bore 1.5 x 1.5 x 3.0 mm standard tension MAH4035MS-15

    MAHLE PISTONS

    $180.53
    This MAHLE Performance Series piston ring set is engineered for 4.035-inch bore engines, featuring file-fit rings with dimensions of 1.5 x 1.5 x 3.0 mm. Constructed from ductile iron and coated with plasma moly, these rings offer standard tension...
    MAH4035MS-15
    SKU:
    MAH4035MS-15
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    MFG Part #:
    4035MS-15
    $180.53
    Qty in Cart: 0
    Quantity:
    Price:
    $180.53
    Subtotal:
  • Mahle piston ring set 4.035 bore 1/16 1/16 3/16 standard tension MAH4035MS

    Mahle piston ring set 4.035 bore 1/16 1/16 3/16 standard tension MAH4035MS

    MAHLE PISTONS

    $134.15
    This MAHLE Motorsports piston ring set is engineered for 4.030-inch bore engines, featuring a file-fit design with 1/16 x 1/16 x 3/16-inch thick rings. The set includes standard tension plasma moly rings suitable for 8-cylinder applications, ensuring...
    MAH4035MS
    SKU:
    MAH4035MS
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    MFG Part #:
    4035MS
    $134.15
    Qty in Cart: 0
    Quantity:
    Price:
    $134.15
    Subtotal:
  • MAHLE Piston Ring Set 4.030 in Bore 0.043 x 0.043 x 3.0 mm Low Tension Plasma Moly 8 Cylinder MAH4035ML-043

    MAHLE Piston Ring Set 4.030 in Bore 0.043 x 0.043 x 3.0 mm Low Tension Plasma Moly 8 Cylinder MAH4035ML-043

    MAHLE PISTONS

    $219.06
    This MAHLE Performance Piston Ring Set is engineered for 4.030-inch bore engines, featuring file-fit rings with 0.043-inch top and second rings, and a 3.0 mm thick low-tension oil ring. Designed for 8-cylinder engines, the set utilizes plasma moly...
    MAH4035ML-043
    SKU:
    MAH4035ML-043
    Availability:
    Ships Same Business Day
    Weight:
    0.65 LBS
    MFG Part #:
    4035ML-043
    $219.06
    Qty in Cart: 0
    Quantity:
    Price:
    $219.06
    Subtotal:
  • Mahle piston ring set 4.035 bore 1/16 1/16 3/16 low tension MAH4035ML

    Mahle piston ring set 4.035 bore 1/16 1/16 3/16 low tension MAH4035ML

    MAHLE PISTONS

    $134.15
    This MAHLE Motorsport piston ring set is engineered for 4.030-inch bore engines, featuring a file-fit configuration with low tension plasma moly rings. Designed for 8-cylinder applications, it offers precise customization and reduced friction for...
    MAH4035ML
    SKU:
    MAH4035ML
    Availability:
    Ships Same Business Day
    Weight:
    0.99 LBS
    MFG Part #:
    4035ML
    $134.15
    Qty in Cart: 0
    Quantity:
    Price:
    $134.15
    Subtotal:
  • Cam Bearing Set  M77SH510S

    Cam Bearing Set SH-510S

    MICHIGAN 77

    $34.99
    Cam Bearing Set Camshaft BearingStandard JournalSmall Block FordKit
    M77SH510S
    SKU:
    M77SH510S
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    MFG Part #:
    SH510S
    $34.99
    Qty in Cart: 0
    Quantity:
    Price:
    $34.99
    Subtotal:
  • Cam Bearing Set  M77SH290S

    Cam Bearing Set SH-290S

    MICHIGAN 77

    $31.99
    Cam Bearing Set SH-290S Includes high-quality camshaft bearings Designed for standard journal applications Perfect fit for small block Chevy engines Comprehensive kit for easy installation Enhances engine performance and longevity Durable construction...
    M77SH290S
    SKU:
    M77SH290S
    Availability:
    Ships Same Business Day
    Weight:
    0.51 LBS
    MFG Part #:
    SH290S
    $31.99
    Qty in Cart: 0
    Quantity:
    Price:
    $31.99
    Subtotal:
  • Cam Bearing Set  M77SH287S

    Cam Bearing Set SH-287S

    MICHIGAN 77

    $36.99
    Cam Bearing Set SH-287S High-quality camshaft bearing for superior performance Designed for standard journal applications Perfectly fits small block Chevy engines Complete kit for easy installation Durable materials ensure long-lasting use Enhances...
    M77SH287S
    SKU:
    M77SH287S
    Availability:
    Ships Same Business Day
    Weight:
    0.54 LBS
    MFG Part #:
    SH287S
    $36.99
    Qty in Cart: 0
    Quantity:
    Price:
    $36.99
    Subtotal:
  • Cam Bearing Set  M77SH1349S

    Cam Bearing Set SH-1349S

    MICHIGAN 77

    $48.99
    Cam Bearing Set SH-1349S Includes precision-engineered camshaft bearings for optimal performance Designed for standard journal sizes, ensuring a perfect fit Compatible with small block Chevy engines for versatile use Comprehensive kit for easy...
    M77SH1349S
    SKU:
    M77SH1349S
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    MFG Part #:
    SH1349S
    $48.99
    Qty in Cart: 0
    Quantity:
    Price:
    $48.99
    Subtotal:
  • Main Bearing Set  M77MS981P20

    Main Bearing Set MS-981P-20

    MICHIGAN 77

    $83.99
    Main Bearing Set MS-981P-20 High-quality main bearing designed for durability and performance. Compatible with Ford Cleveland, Modified, and Small Block engines. P-Series construction for enhanced reliability and strength. 0.020 in undersize for precise...
    M77MS981P20
    SKU:
    M77MS981P20
    Availability:
    Ships Same Business Day
    Weight:
    1.46 LBS
    MFG Part #:
    MS981P20
    $83.99
    Qty in Cart: 0
    Quantity:
    Price:
    $83.99
    Subtotal:
  • Main Bearing Set  M77MS981P10

    Main Bearing Set MS-981P-10

    MICHIGAN 77

    $88.99
    Main Bearing Set MS-981P-10 High-quality main bearing set for optimal engine performance Designed specifically for Ford Cleveland, Modified, and Small Block engines Features a P-Series design for enhanced durability 0.010 inch undersize for precision...
    M77MS981P10
    SKU:
    M77MS981P10
    Availability:
    Ships Same Business Day
    Weight:
    1.38 LBS
    MFG Part #:
    MS981P10
    $88.99
    Qty in Cart: 0
    Quantity:
    Price:
    $88.99
    Subtotal:
  • Main Bearing Set  M77MS981P

    Main Bearing Set MS-981P

    MICHIGAN 77

    $84.99
    Main Bearing Set MS-981P High-quality main bearing set for durability Designed specifically for P-Series applications Standard size for easy installation Compatible with Ford Cleveland, Modified, and Small Block engines Comprehensive kit for all...
    M77MS981P
    SKU:
    M77MS981P
    Availability:
    Ships Same Business Day
    Weight:
    1.34 LBS
    MFG Part #:
    MS981P
    $84.99
    Qty in Cart: 0
    Quantity:
    Price:
    $84.99
    Subtotal:
  • Main Bearing Set  M77MS981H

    Main Bearing Set MS-981H

    MICHIGAN 77

    $103.99
    Main Bearing Set - MS-981H High-quality main bearing set designed for optimal engine performance. Compatible with H-Series engines for seamless integration. Standard sizing ensures a perfect fit for your application. Specifically engineered for Ford...
    M77MS981H
    SKU:
    M77MS981H
    Availability:
    Ships Same Business Day
    Weight:
    1.38 LBS
    MFG Part #:
    MS981H
    $103.99
    Qty in Cart: 0
    Quantity:
    Price:
    $103.99
    Subtotal:
  • Main Bearing Set  M77MS909P30

    Main Bearing Set MS-909P-30

    MICHIGAN 77

    $51.99
    Main Bearing Set Main BearingP-Series0.030 in UndersizeSmall Block ChevyKit
    M77MS909P30
    SKU:
    M77MS909P30
    Availability:
    Ships Same Business Day
    Weight:
    1.36 LBS
    MFG Part #:
    MS909P30
    $51.99
    Qty in Cart: 0
    Quantity:
    Price:
    $51.99
    Subtotal:
  • Main Bearing Set  M77MS909P20

    Main Bearing Set MS-909P-20

    MICHIGAN 77

    $52.99
    Main Bearing Set - MS-909P-20 Designed for optimal performance in Small Block Chevy engines Includes a complete set of main bearings for easy installation P-Series construction ensures durability and reliability 0.020 in undersize for precise fit and...
    M77MS909P20
    SKU:
    M77MS909P20
    Availability:
    Ships Same Business Day
    Weight:
    1.30 LBS
    MFG Part #:
    MS909P20
    $52.99
    Qty in Cart: 0
    Quantity:
    Price:
    $52.99
    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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