Main Bearings
Circle Track Main Bearings at JJ Motorsports
Main bearings support the crankshaft's weight and rotation, providing durability and stability under high loads in circle track racing. Designed for late models, modifieds, and street stocks, these bearings ensure consistent performance and longevity in demanding IMCA, USMTS, and dirt oval conditions, available in coated and extra clearance options for Small Block Ford and GM LS-Series engines.
Shop trusted brands like MAHLE ORIGINAL/CLEVITE for coated H-Series sets, KING BEARINGS for high-performance options, and ACL BEARINGS for reliable bearings. Explore related categories such as Circle Track Engine Bearings for complete bearing solutions or Circle Track Engines and Components for additional upgrades.
Top Circle Track Main Bearings
- Coated Main Bearing Set MS-590HC – Main Bearing H-Series Standard Coated Small Block Ford.
- Main Bearing Set GM LS MS-2411HX – Main Bearings H-Series Standard Extra Oil Clearance GM LS-Series.
- Main Bearing Set GM LS Coated MS-2411HC – Main Bearings H-Series Standard Coated GM LS-Series.
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
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Main Bearing Set MS-1432P-20
MICHIGAN 77
$92.99Main bearing wear is one of the most critical failure points in high-performance engines, directly affecting crankshaft stability, oil pressure, and overall engine longevity. The MS-1432P-20 delivers precision-engineered bearing clearances specifically...M77MS1432P20- SKU:
- M77MS1432P20
- Availability:
- Ships Same Business Day
- Weight:
- 1.48 LBS
- MFG Part #:
- MS1432P20
$92.99 -
Main Bearing Set MS-1432P-10
MICHIGAN 77
$87.99Main bearing wear is one of the fastest paths to catastrophic engine failure—whether you're pushing power at the track or building a reliable street engine. The MS-1432P-10 delivers precision-engineered main bearings with tight tolerances and premium...M77MS1432P10- SKU:
- M77MS1432P10
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MFG Part #:
- MS1432P10
$87.99 -
Main Bearing Set MS-1432P
MICHIGAN 77
$88.99Engine rebuilds demand precision components that maintain tight tolerances under sustained load and RPM cycles. The MS-1432P Main Bearing Set delivers OEM-grade construction specifically engineered for P-Series applications, ensuring proper oil film...M77MS1432P- SKU:
- M77MS1432P
- Availability:
- Ships Same Business Day
- Weight:
- 1.37 LBS
- MFG Part #:
- MS1432P
$88.99 -
Main Bearing Set MS-1432HX
MICHIGAN 77
$107.99Proper main bearing clearance is critical for engine longevity and reliability, especially in modified or high-output applications where oil flow directly impacts bearing life. The MS-1432HX delivers extra oil clearance specifically engineered for...M77MS1432HX- SKU:
- M77MS1432HX
- Availability:
- Ships Same Business Day
- Weight:
- 1.39 LBS
- MFG Part #:
- MS1432HX
$107.99 -
Main Bearing Set MS-1432H
MICHIGAN 77
$108.99Main bearing wear is one of the primary culprits behind engine knock, loss of power, and catastrophic failure—especially in high-performance and rebuilt applications. The MS-1432H delivers precision-engineered bearing surfaces that maintain proper oil...M77MS1432H- SKU:
- M77MS1432H
- Availability:
- Ships Same Business Day
- Weight:
- 1.42 LBS
- MFG Part #:
- MS1432H
$108.99 -
Main Bearing Set MS-1110H-1
MICHIGAN 77
$284.99Main bearing wear is one of the most common causes of catastrophic engine failure, especially under sustained high-RPM or forced-induction loads. The MS-1110H-1 delivers precision-engineered bearing surfaces with tight tolerances to maintain proper oil...M77MS1110H1- SKU:
- M77MS1110H1
- Availability:
- Ships Same Business Day
- Weight:
- 1.96 LBS
- MFG Part #:
- MS1110H1
$284.99 -
Main Bearing Set MS-1110H
MICHIGAN 77
$219.99A quality main bearing set is the foundation of any reliable small block Chevy engine—without proper bearing support, your crankshaft will wear prematurely and compromise overall engine durability. The MS-1110H delivers OEM-standard dimensions and...M77MS1110H- SKU:
- M77MS1110H
- Availability:
- Ships Same Business Day
- Weight:
- 2.01 LBS
- MFG Part #:
- MS1110H
$219.99 -
Main Bearing Set MS-1038P-10
MICHIGAN 77
$99.99A quality main bearing set is fundamental to engine reliability during high-performance operation and rebuilds. The MS-1038P-10 delivers precision fit and durability through engineered tolerances, ensuring consistent oil film strength and reduced...M77MS1038P10- SKU:
- M77MS1038P10
- Availability:
- Ships Same Business Day
- Weight:
- 1.32 LBS
- MFG Part #:
- MS1038P10
$99.99 -
Main Bearing Set MS-1038P
MICHIGAN 77
$109.99Main bearing wear is one of the fastest ways to compromise engine reliability and performance, especially under sustained load or high RPM conditions. The MS-1038P delivers OEM-grade construction with the precision tolerances required to maintain proper...M77MS1038P- SKU:
- M77MS1038P
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- MFG Part #:
- MS1038P
$109.99 -
Main Bearing Set MS-1038HX
MICHIGAN 77
$104.99Main bearing wear is one of the most critical failure points in any engine build, and running undersized clearances can lead to catastrophic bearing failure under sustained load. The MS-1038HX delivers the extra oil clearance your Small Block Chevy needs...M77MS1038HX- SKU:
- M77MS1038HX
- Availability:
- Ships Same Business Day
- Weight:
- 1.31 LBS
- MFG Part #:
- MS1038HX
$104.99 -
Main Bearing Set MS-1038H-10
MICHIGAN 77
$103.99Main bearing wear is one of the most critical failure points in any engine rebuild or high-performance build. The MS-1038H-10 delivers the precision fit and material quality necessary to maintain stable crankshaft clearances under sustained load, whether...M77MS1038H10- SKU:
- M77MS1038H10
- Availability:
- Ships Same Business Day
- Weight:
- 1.37 LBS
- MFG Part #:
- MS1038H10
$103.99 -
Main Bearing Set MS-1038H-1
MICHIGAN 77
$88.99Main bearing wear is one of the fastest ways to compromise engine reliability and performance. The MS-1038H-1 delivers precision-fit bearings engineered specifically for Small Block Chevy platforms, ensuring proper clearances and maximum oil film...M77MS1038H1- SKU:
- M77MS1038H1
- Availability:
- Ships Same Business Day
- Weight:
- 1.27 LBS
- MFG Part #:
- MS1038H1
$88.99 -
Main Bearing Set Coated SBC w/350 Mains KEBMB557XPC010
KING BEARINGS
$158.99If you're rebuilding or refreshing a Small Block Chevy engine, main bearing wear is non-negotiable—it directly affects oil pressure stability, engine longevity, and overall reliability under load. This XP-coated bearing set is engineered to handle the...KEBMB557XPC010- SKU:
- KEBMB557XPC010
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- MFG Part #:
- MB 557XPC 010
$158.99Qty in Cart: 0Quantity:Price:$158.99Subtotal: -
Main Bearing Set Coated SBC w/350 Mains MB 557XPC
KING BEARINGS
$126.99A quality main bearing set is the foundation of engine reliability and longevity. The MB 557XPC delivers superior load distribution and wear resistance through advanced XP coating technology, protecting your Small Block Chevy engine during high-RPM...KEBMB557XPC- SKU:
- KEBMB557XPC
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MFG Part #:
- MB 557XPC
$126.99Qty in Cart: 0Quantity:Price:$126.99Subtotal: -
Main Bearing Set KEBMB557SI020
KING BEARINGS
$20.99A properly sized main bearing set is critical for engine longevity and reliability—undersized bearings can lead to catastrophic engine failure if not matched precisely to your crankshaft specifications. This Alecular SI set gives you the exact 0.020-inch...KEBMB557SI020- SKU:
- KEBMB557SI020
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- MFG Part #:
- MB 557SI 020
$20.99 -
Main Bearing Set KEBMB557SI010
KING BEARINGS
$20.99Main bearing wear is one of the most critical failure points in any high-performance engine, directly affecting reliability and longevity under load. This Alecular SI undersize set restores proper clearances and bearing surface contact when factory specs...KEBMB557SI010- SKU:
- KEBMB557SI010
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- MFG Part #:
- MB 557SI 010
$20.99 -
Main Bearing Set MB 557SI
KING BEARINGS
$20.99A quality main bearing set is critical to engine longevity and reliability under load—especially in performance applications where tolerances matter. The MB 557SI delivers the precision fit and material durability required for Small Block Chevy rebuilds,...KEBMB557SI- SKU:
- KEBMB557SI
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- MFG Part #:
- MB 557SI
$20.99 -
Main Bearing Set KEBMB557HP030
KING BEARINGS
$76.99A precision main bearing set is critical to engine longevity and reliability, especially in high-performance applications where bearing clearances directly impact oil pressure, heat dissipation, and overall engine stability. This HP-grade undersize set...KEBMB557HP030- SKU:
- KEBMB557HP030
- Availability:
- Ships Same Business Day
- Weight:
- 1.18 LBS
- MFG Part #:
- MB 557HP 030
$76.99 -
Main Bearing Set KEBMB557HP020
KING BEARINGS
$76.99Small block Chevy engines demand precision-engineered bearings that handle sustained performance without premature wear. This Main Bearing Set is undersized by 0.020 inches to deliver a critical fit tolerance that maximizes oil film strength and reduces...KEBMB557HP020- SKU:
- KEBMB557HP020
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- MFG Part #:
- MB 557HP 020
$76.99 -
Main Bearing Set KEBMB557HP011
KING BEARINGS
$76.99A properly sized main bearing set is critical to engine longevity and reliable power delivery—undersized bearings can lead to catastrophic engine failure, while proper fitment ensures optimal oil flow and clearances. This 0.011" undersize set is...KEBMB557HP011- SKU:
- KEBMB557HP011
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- MFG Part #:
- MB 557HP 011
$76.99
