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 SBC MB 557SISTDX
KING BEARINGS
$23.99Main BearingSI-SeriesStandardSmall Block ChevyKitKEBMB557SISTDX- SKU:
- KEBMB557SISTDX
- Availability:
- Ships Same Business Day
- Weight:
- 1.18 LBS
$23.99 -
Main Bearing Set GM LS1/LS2/LS4/LS6 MB5013XP 010X
KING BEARINGS
$137.99Main BearingXP0.010 in UndersizeExtra Oil ClearanceGM LS-SeriesKEBMB5013XP010X- SKU:
- KEBMB5013XP010X
- Availability:
- Ships Same Business Day
- Weight:
- 1.34 LBS
$137.99 -
Main Bearing Set MS-1432P-30
MICHIGAN 77
$77.99Main BearingP-Series0.030 in UndersizeFord Cleveland / Modified / Small BlockKitM77MS1432P30- SKU:
- M77MS1432P30
- Availability:
- Ships Same Business Day
- Weight:
- 1.53 LBS
$77.99 -
XP Main Bearing Set Dart LS-next Block MB5777XP
KING BEARINGS
$169.99Main BearingXPStandardDart LS-SeriesKitKEBMB5777XP- SKU:
- KEBMB5777XP
- Availability:
- Ships Same Business Day
- Weight:
- 1.28 LBS
$169.99 -
Main Bearing Set SEA140M20
SEALED POWER
$77.99Precision-engineered for optimal performance in small block Chevy engines. 0.020 inch undersize for a perfect fit and enhanced durability. Designed to reduce friction and improve engine efficiency. Constructed with high-quality materials...SEA140M20- SKU:
- SEA140M20
- Availability:
- Ships Same Business Day
- Weight:
- 1.48 LBS
- MFG Part #:
- 140M20
$77.99Qty in Cart: 0Quantity:Price:$77.99Subtotal: -
Main Bearing Set SEA139M20
SEALED POWER
$82.99Main Bearing - Speed Pro - 0.020 in Undersize - Small Block Chevy - KitSEA139M20- SKU:
- SEA139M20
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- MFG Part #:
- 139M20
$82.99 -
Main Bearing Set MS-429HX
MICHIGAN 77
$123.99Main Bearing Set MS-429HX High-performance Main Bearing designed for durability Compatible with H-Series engines for reliable operation Standard sizing ensures a perfect fit for your vehicle Features extra oil clearance for improved lubrication Tailored...M77MS429HX- SKU:
- M77MS429HX
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- MFG Part #:
- MS429HX
$123.99Qty in Cart: 0Quantity:Price:$123.99Subtotal: -
Main Bearing Set MS-429H-10
MICHIGAN 77
$132.99Main Bearing Set MS-429H-10 Complete main bearing set for enhanced engine performance Designed specifically for H-Series applications 0.010 inch undersized for precise fit and improved oil clearance Compatible with Small Block Chevy engines for...M77MS429H10- SKU:
- M77MS429H10
- Availability:
- Ships Same Business Day
- Weight:
- 1.27 LBS
- MFG Part #:
- MS429H10
$132.99 -
Main Bearing Set MS-1038H-11
MICHIGAN 77
$89.99Main Bearing Set Main BearingH-Series0.011 in UndersizeSmall Block ChevyKitM77MS1038H11- SKU:
- M77MS1038H11
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MFG Part #:
- MS1038H11
$89.99Qty in Cart: 0Quantity:Price:$89.99Subtotal: -
Main Bearing Set MS-1038H
MICHIGAN 77
$91.99Main Bearing Set MS-1038H High-quality main bearing set for reliable engine performance Designed specifically for H-Series applications Standard size suitable for various small block Chevy engines Includes all necessary components for a complete...M77MS1038H- SKU:
- M77MS1038H
- Availability:
- Ships Same Business Day
- Weight:
- 1.31 LBS
- MFG Part #:
- MS1038H
$91.99 -
Main Bearing Set. KEBMB557SI001
KING BEARINGS
$28.99Main Bearing Set. Main Bearing - Alecular SI - 0.001 in Undersize - Small Block Chevy - KitKEBMB557SI001- SKU:
- KEBMB557SI001
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MFG Part #:
- MB 557SI 001
$28.99 -
Main Bearing Set MB 509XP
KING BEARINGS
$75.99Main Bearing Set Main BearingXPStandardSmall Block ChevyKitKEBMB509XP- SKU:
- KEBMB509XP
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- MFG Part #:
- MB 509XP
$75.99 -
On Sale
Main Bearing Set - Calico Coated MS429HX
CALICO COATINGS
MSRP: $193.99Now: $175.77Was: $193.99Main Bearing Set - Calico CoatedMain BearingH-SeriesStandardExtra Oil ClearanceCoatedSmall Block ChevyKitCLCMS429HX- SKU:
- CLCMS429HX
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- MFG Part #:
- MS429HX
MSRP: $193.99Now: $175.77Was: $193.99Qty in Cart: 0Quantity:Price:MSRP: $193.99Now: $175.77Was: $193.99Subtotal: -
On Sale
Main Bearing Set - Calico Coated MS429H
CALICO COATINGS
MSRP: $223.99Now: $202.09Was: $223.99Main Bearing Set - Calico Coated - MS429H High-performance main bearing set Designed for H-Series applications Standard size for easy installation Durable Calico coating for enhanced protection Compatible with Small Block Chevy...CLCMS429H- SKU:
- CLCMS429H
- Availability:
- Ships Same Business Day
- Weight:
- 1.23 LBS
- MFG Part #:
- MS429H
MSRP: $223.99Now: $202.09Was: $223.99
