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 KEBMB557HP010
KING BEARINGS
$69.99Main bearing clearance directly impacts engine longevity and power delivery—undersized bearings compensate for wear and ensure precise oil film thickness under high load. This complete bearing set delivers the tight tolerances required for Small Block...KEBMB557HP010- SKU:
- KEBMB557HP010
- Availability:
- Ships Same Business Day
- Weight:
- 1.12 LBS
- MFG Part #:
- MB 557HP 010
$69.99 -
Main Bearing Set KEBMB557HP001
KING BEARINGS
$75.99Precision main bearings are critical to engine longevity and reliable power delivery, especially in high-performance Small Block Chevy applications where tight tolerances directly impact durability. This HP-grade bearing set is engineered to maintain...KEBMB557HP001- SKU:
- KEBMB557HP001
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- MFG Part #:
- MB 557HP 001
$75.99 -
Main Bearing Set MB 557HP
KING BEARINGS
$69.99Main bearing wear is one of the fastest paths to catastrophic engine failure—especially under high-output conditions. The MB 557HP delivers the precision fit and material quality needed to keep your Small Block Chevy's rotating assembly stable and...KEBMB557HP- SKU:
- KEBMB557HP
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- MFG Part #:
- MB 557HP
$69.99 -
Main Bearing Set MB 509SI
KING BEARINGS
$39.99Main bearing wear is one of the most common failure points in high-mileage Small Block Chevy engines, and replacing them with quality bearings is non-negotiable for reliability. The MB 509SI delivers the precision tolerances and material durability...KEBMB509SI- SKU:
- KEBMB509SI
- Availability:
- Ships Same Business Day
- Weight:
- 1.14 LBS
- MFG Part #:
- MB 509SI
$39.99 -
Main Bearing Set KEBMB509HP020
KING BEARINGS
$71.99Upgrading to a precision-engineered main bearing set is essential for small block Chevy engines that demand reliable power delivery under sustained load—whether on the street or the strip. The 0.020 inch undersize specification ensures optimal clearance...KEBMB509HP020- SKU:
- KEBMB509HP020
- Availability:
- Ships Same Business Day
- Weight:
- 1.18 LBS
- MFG Part #:
- MB 509HP 020
$71.99Qty in Cart: 0Quantity:Price:$71.99Subtotal: -
Main Bearing Set KEBMB509HP011
KING BEARINGS
$84.99Main bearing wear accelerates under high RPM and boost conditions, compromising crankshaft stability and oil film integrity. This 0.011" undersize bearing set restores the precise clearances your Small Block Chevy demands for sustained performance,...KEBMB509HP011- SKU:
- KEBMB509HP011
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- MFG Part #:
- MB 509HP 011
$84.99 -
Main Bearing Set KEBMB509HP010
KING BEARINGS
$71.99If you're building or rebuilding a Small Block Chevy engine for serious power, bearing clearances make or break reliability at high RPM. This Main Bearing Set delivers precision-engineered fitment with 0.010" undersize tolerances, eliminating guesswork...KEBMB509HP010- SKU:
- KEBMB509HP010
- Availability:
- Ships Same Business Day
- Weight:
- 1.18 LBS
- MFG Part #:
- MB 509HP 010
$71.99 -
Main Bearing Set KEBMB509HP001
KING BEARINGS
$81.99Precision main bearings are critical to engine longevity and consistent power delivery, especially in high-RPM and forced-induction applications. The MB 509HP 001 is engineered to exacting tolerances, ensuring proper oil film thickness and load...KEBMB509HP001- SKU:
- KEBMB509HP001
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- MFG Part #:
- MB 509HP 001
$81.99 -
Main Bearing Set MB 509HP
KING BEARINGS
$71.99Main bearing failure is one of the most catastrophic engine failures you can experience—and it's entirely preventable with the right foundation. The MB 509HP Main Bearing Set delivers the precision tolerances and durable construction your small block...KEBMB509HP- SKU:
- KEBMB509HP
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- MFG Part #:
- MB 509HP
$71.99 -
On Sale
Main Bearing Set - Calico Coated MS909HX
CALICO COATINGS
MSRP: $184.99Now: $167.31Was: $184.99A quality main bearing set is the foundation of any reliable small block Chevy build—whether you're assembling a stock rebuild or pushing forced induction limits. The Calico coating on this MS909HX set provides superior corrosion resistance and wear...CLCMS909HX- SKU:
- CLCMS909HX
- Availability:
- Ships Same Business Day
- Weight:
- 1.26 LBS
- MFG Part #:
- MS909HX
MSRP: $184.99Now: $167.31Was: $184.99 -
On Sale
Main Bearing Set - Calico Coated MS909H9
CALICO COATINGS
MSRP: $179.99Now: $162.61Was: $179.99A quality main bearing set is fundamental to engine longevity and reliability, especially in high-performance applications where tolerances matter. The Calico coating on this MS909H9 set reduces friction and wear during critical startup and high-RPM...CLCMS909H9- SKU:
- CLCMS909H9
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- MFG Part #:
- MS909H9
MSRP: $179.99Now: $162.61Was: $179.99 -
On Sale
Main Bearing Set - Calico Coated MS909H20
CALICO COATINGS
MSRP: $190.99Now: $172.95Was: $190.99Main bearing wear is one of the most critical failure points in any high-performance engine build, and choosing the right bearing set directly impacts reliability and longevity under sustained load. The Calico Coated MS909H20 delivers the precision...CLCMS909H20- SKU:
- CLCMS909H20
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MFG Part #:
- MS909H20
MSRP: $190.99Now: $172.95Was: $190.99Qty in Cart: 0Quantity:Price:MSRP: $190.99Now: $172.95Was: $190.99Subtotal: -
On Sale
Main Bearing Set - Calico Coated MS909H19
CALICO COATINGS
MSRP: $187.99Now: $175.77Was: $187.99Main bearing wear is one of the most critical failure points in any engine build, and running undersized bearings ensures proper oil clearance and film strength under sustained load. The Calico coating on this MS909H19 set provides superior anti-wear...CLCMS909H19- SKU:
- CLCMS909H19
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MFG Part #:
- MS909H19
MSRP: $187.99Now: $175.77Was: $187.99Qty in Cart: 0Quantity:Price:MSRP: $187.99Now: $175.77Was: $187.99Subtotal: -
On Sale
Main Bearing Set - Calico Coated MS909H10
CALICO COATINGS
MSRP: $178.99Now: $161.67Was: $178.99A quality main bearing set is critical to engine longevity and reliability, especially when pushing your small block Chevy to its limits. The Calico coating on this MS909H10 set reduces friction and wear at the crankshaft, directly translating to better...CLCMS909H10- SKU:
- CLCMS909H10
- Availability:
- Ships Same Business Day
- Weight:
- 1.34 LBS
- MFG Part #:
- MS909H10
MSRP: $178.99Now: $161.67Was: $178.99 -
On Sale
Main Bearing Set - Calico Coated MS909H001
CALICO COATINGS
MSRP: $182.99Now: $165.43Was: $182.99The Main Bearing Set - Calico Coated MS909H001 is engineered for Small Block Chevy engines that demand precision and reliability under sustained high RPM and boost conditions. The Calico coating provides superior wear resistance and oil film strength,...CLCMS909H001- SKU:
- CLCMS909H001
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- MFG Part #:
- MS909H001
MSRP: $182.99Now: $165.43Was: $182.99 -
On Sale
Main Bearing Set - Calico Coated MS909H
CALICO COATINGS
MSRP: $173.99Now: $156.97Was: $173.99Main bearing wear is one of the most common failure points in high-mileage small block engines, and inadequate bearing protection leads to catastrophic damage. The Calico Coated MS909H set delivers superior load-carrying capacity and wear resistance...CLCMS909H- SKU:
- CLCMS909H
- Availability:
- Ships Same Business Day
- Weight:
- 1.29 LBS
- MFG Part #:
- MS909H
MSRP: $173.99Now: $156.97Was: $173.99 -
On Sale
Main Bearing Set - Calico Coated MS590HX
CALICO COATINGS
MSRP: $200.99Now: $181.41Was: $200.99A quality main bearing set is foundational to engine reliability and longevity, especially under sustained high-RPM operation or forced induction. The Calico Coated MS590HX delivers the extra oil clearance needed for high-performance small block Ford...CLCMS590HX- SKU:
- CLCMS590HX
- Availability:
- Ships Same Business Day
- Weight:
- 1.19 LBS
- MFG Part #:
- MS590HX
MSRP: $200.99Now: $181.41Was: $200.99Qty in Cart: 0Quantity:Price:MSRP: $200.99Now: $181.41Was: $200.99Subtotal: -
On Sale
Main Bearing Set - Calico Coated MS590H10
CALICO COATINGS
MSRP: $207.99Now: $187.99Was: $207.99If you're rebuilding a Small Block Ford engine, the quality of your main bearings directly determines how well your engine handles peak pressures and sustained performance. The Calico Coated MS590H10 delivers proven durability through advanced surface...CLCMS590H10- SKU:
- CLCMS590H10
- Availability:
- Ships Same Business Day
- Weight:
- 1.23 LBS
- MFG Part #:
- MS590H10
MSRP: $207.99Now: $187.99Was: $207.99 -
On Sale
Main Bearing Set - Calico Coated MS590H001
CALICO COATINGS
MSRP: $190.99Now: $172.95Was: $190.99A quality main bearing set is fundamental to engine reliability and longevity, especially in high-performance applications where tolerances are critical. The Calico Coated MS590H001 delivers precision engineering with a protective coating that enhances...CLCMS590H001- SKU:
- CLCMS590H001
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- MFG Part #:
- MS590H001
MSRP: $190.99Now: $172.95Was: $190.99 -
On Sale
Main Bearing Set - Calico Coated MS590H
CALICO COATINGS
MSRP: $178.99Now: $161.67Was: $178.99Main bearing failure is one of the quickest ways to turn a running engine into scrap metal. The Calico Coated MS590H delivers the load-carrying capacity and durability your high-performance Small Block Ford needs, whether you're building for street...CLCMS590H- SKU:
- CLCMS590H
- Availability:
- Ships Same Business Day
- Weight:
- 1.19 LBS
- MFG Part #:
- MS590H
MSRP: $178.99Now: $161.67Was: $178.99
