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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Coated Main Bearing Set MS-590HC
MAHLE ORIGINAL/CLEVITE
$148.99A quality main bearing set is the foundation of engine reliability, especially when you're pushing power output or operating at sustained RPMs. The Coated Main Bearing Set MS-590HC delivers the durability and precision fit required for small block Ford...M77MS590HC- SKU:
- M77MS590HC
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
$148.99 -
Main Bearing Set GM LS MS-2411HX
MAHLE ORIGINAL/CLEVITE
$212.99A quality main bearing set is the foundation of engine reliability, especially in high-performance LS applications where increased boost pressure and sustained RPMs demand precision fit and superior oil delivery. The MS-2411HX H-Series bearings are...M77MS2411HX- SKU:
- M77MS2411HX
- Availability:
- Ships Same Business Day
- Weight:
- 1.26 LBS
$212.99 -
Main Bearing Set GM LS Coated MS-2411HC
MAHLE ORIGINAL/CLEVITE
$269.99A quality main bearing set is foundational to engine reliability and longevity, especially in high-performance LS applications where sustained power delivery demands precision-engineered components. The MS-2411HC delivers OEM-grade durability with a...M77MS2411HC- SKU:
- M77MS2411HC
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$269.99 -
Main Bearing Set GM LS MS-2411H
MAHLE ORIGINAL/CLEVITE
$203.99A properly spec'd main bearing set is non-negotiable for LS-series engine reliability, especially if you're running sustained boost or elevated RPM. The MS-2411H delivers OEM-grade clearances and material composition, ensuring consistent oil film...M77MS2411H- SKU:
- M77MS2411H
- Availability:
- Ships Same Business Day
- Weight:
- 1.26 LBS
$203.99 -
Coated Main Bearing Set MS-1038HXC
MAHLE ORIGINAL/CLEVITE
$165.99A quality main bearing set is foundational to engine reliability and longevity, especially under high-load or boosted conditions. The MS-1038HXC delivers the extra oil clearance and protective coating your built engine needs to handle sustained...M77MS1038HXC- SKU:
- M77MS1038HXC
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
$165.99 -
Main Bearing Set - Dart LS-Next Block MB5777XP STDX
KING BEARINGS
$155.99A high-performance engine demands precision tolerances and superior oil delivery to survive sustained power and rpm peaks. The Dart LS-Next Main Bearing Set MB5777XP STDX delivers both through XP-grade construction and extra oil clearance, ensuring your...KEBMB5777XPSTDX- SKU:
- KEBMB5777XPSTDX
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
$155.99 -
Main Bearing Set Coated SBC w/350 Mains MB 557XPC 020
KING BEARINGS
$139.99A quality main bearing set is the foundation of any reliable small block Chevy engine, and the MB 557XPC 020 delivers the precision and durability required for consistent performance whether you're rebuilding a street engine or prepping for competition...KEBMB557XPC020- SKU:
- KEBMB557XPC020
- Availability:
- Ships Same Business Day
- Weight:
- 1.53 LBS
$139.99 -
Main Bearing Set MB 557HP010X
KING BEARINGS
$76.99Proper main bearing clearance is critical to engine longevity and oil film stability under high-load conditions. This 0.010" undersize set with extra oil clearance is engineered for Small Block Chevy engines running elevated boost, nitrous, or sustained...KEBMB557HP010X- SKU:
- KEBMB557HP010X
- Availability:
- Ships Same Business Day
- Weight:
- 1.09 LBS
$76.99 -
Main Bearing Set MB 509SI 010
KING BEARINGS
$39.99When you're rebuilding a Small Block Chevy engine, precision in the bearing clearances directly impacts oil pressure stability, ring seal integrity, and overall engine longevity. The Main Bearing Set MB 509SI 010 delivers the exact undersize...KEBMB509SI010- SKU:
- KEBMB509SI010
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
$39.99Qty in Cart: 0Quantity:Price:$39.99Subtotal: -
Main Bearing Set MB 509HP STDX
KING BEARINGS
$75.99A quality main bearing set is fundamental to engine reliability, especially in high-performance applications where increased combustion pressures demand precise tolerances and superior load distribution. The MB 509HP STDX delivers the extra oil clearance...KEBMB509HPSTDX- SKU:
- KEBMB509HPSTDX
- Availability:
- Ships Same Business Day
- Weight:
- 1.34 LBS
$75.99 -
Main Bearing Set MB 509HP 030
KING BEARINGS
$78.99Maintaining proper bearing clearance is critical for small block Chevy longevity and reliability, especially in high-performance applications where engine stress is elevated. The MB 509HP 030 delivers precision-engineered main bearings sized for 0...KEBMB509HP030- SKU:
- KEBMB509HP030
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
$78.99Qty in Cart: 0Quantity:Price:$78.99Subtotal: -
Main Bearing Set Coated GM LS1/LS2/LS4/LS6 MB5013XPC 010
KING BEARINGS
$179.99Main bearing wear is one of the most critical failure points in high-output LS engines—and catastrophic bearing failure means catastrophic engine failure. The MB5013XPC 010 delivers the precision tolerances and protective coating your build needs to...KEBMB5013XPC010- SKU:
- KEBMB5013XPC010
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
$179.99 -
Main Bearing Set Coated GM LS1/LS2/LS4/LS6 MB5013XPC
KING BEARINGS
$179.99Your LS engine's reliability depends on main bearing durability under sustained boost and high RPM loads. The MB5013XPC delivers factory-grade performance with a proprietary XP coating that reduces friction, extends service life, and maintains precise...KEBMB5013XPC- SKU:
- KEBMB5013XPC
- Availability:
- Ships Same Business Day
- Weight:
- 1.28 LBS
$179.99 -
Main Bearing Set GM LS1/LS2/LS4/LS6 MB5013XP 020
KING BEARINGS
$142.99Main bearing wear is one of the fastest paths to catastrophic engine failure—and stock bearings often aren't built for high-RPM racing demands. The MB5013XP 020 XP series bearings deliver the precision tolerances and load-carrying capacity your LS engine...KEBMB5013XP020- SKU:
- KEBMB5013XP020
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
$142.99Qty in Cart: 0Quantity:Price:$142.99Subtotal: -
Main Bearing Set GM LS1/LS2/LS4/LS6 MB5013XP 011
KING BEARINGS
$149.99Main bearing wear is one of the most critical failure points in high-rpm LS-series engines, and running worn bearings drastically compromises oil pressure, power delivery, and engine longevity. The MB5013XP 011 kit delivers precision-engineered bearing...KEBMB5013XP011- SKU:
- KEBMB5013XP011
- Availability:
- Ships Same Business Day
- Weight:
- 1.34 LBS
$149.99 -
Main Bearing Set GM LS1/LS2/LS4/LS6 MB5013XP 010
KING BEARINGS
$125.99Main bearing wear is one of the most critical issues in high-performance LS engines—ignoring it leads to catastrophic failure and expensive rebuild costs. The MB5013XP 010 delivers OEM-grade precision with the durability needed for forced-induction...KEBMB5013XP010- SKU:
- KEBMB5013XP010
- Availability:
- Ships Same Business Day
- Weight:
- 1.34 LBS
$125.99 -
Main Bearing Set GM LS1/LS2/LS4/LS6 MB5013XP 001
KING BEARINGS
$142.99Main bearing wear or damage compromises crankshaft stability and engine reliability—especially critical in high-RPM LS applications where precision tolerances are non-negotiable. The MB5013XP 001 XP bearing set delivers OEM-quality construction with the...KEBMB5013XP001- SKU:
- KEBMB5013XP001
- Availability:
- Ships Same Business Day
- Weight:
- 1.28 LBS
$142.99 -
Main Bearing Set GM LS1/LS2/LS4/LS6 MB5013HPSTDX
KING BEARINGS
$138.99A robust main bearing set is the foundation of any high-performance LS engine build. Inadequate bearing clearance and material quality lead to premature wear, oil starvation, and catastrophic engine failure—especially under sustained boost or high RPM...KEBMB5013HPSTDX- SKU:
- KEBMB5013HPSTDX
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
$138.99 -
On Sale
ACL Bearings Main Bearing Set 5M7298HX-STD
ACL BEARINGS
MSRP: $174.99Now: $149.14Was: $174.99ACL Bearings Main Bearing Set 5M7298HX-STD is engineered for LS-series engines that demand reliable, long-term durability under sustained high-rpm and boost conditions. The extra oil clearance design ensures consistent lubrication and reduces bearing...AEB5M7298HX-STD- SKU:
- AEB5M7298HX-STD
- Availability:
- Ships Same Business Day
- Weight:
- 1.02 LBS
MSRP: $174.99Now: $149.14Was: $174.99 -
On Sale
ACL Bearings Main Bearing Set 5M7298H-STD
ACL BEARINGS
MSRP: $174.99Now: $149.14Was: $174.99The crankshaft is only as strong as the bearings that support it—and in high-performance LS applications, OEM tolerances won't cut it. ACL's main bearing set delivers the precision clearances and load-carrying capacity your engine demands, whether you're...AEB5M7298H-STD- SKU:
- AEB5M7298H-STD
- Availability:
- Ships Same Business Day
- Weight:
- 1.03 LBS
MSRP: $174.99Now: $149.14Was: $174.99
