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!
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- Qty in Cart
- Quantity
- Price
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On Sale
ACL Bearings Main Bearing Set 5M7298H-10
ACL BEARINGS
MSRP: $174.99Now: $149.14Was: $174.99Engine longevity and reliability start with precision bearings that can withstand high RPMs and sustained load. The ACL Bearings Main Bearing Set 5M7298H-10 delivers OEM-quality construction with H-Series specifications designed specifically for...AEB5M7298H-10- SKU:
- AEB5M7298H-10
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
MSRP: $174.99Now: $149.14Was: $174.99 -
On Sale
ACL Bearings Main Bearing Set 5M7298H-01
ACL BEARINGS
MSRP: $174.99Now: $149.14Was: $174.99Main bearings are the foundation of engine reliability—they support your crankshaft under extreme loads and must maintain precise clearances to prevent catastrophic failure. The ACL Bearings H-Series Main Bearing Set delivers the tight tolerances and...AEB5M7298H-01- SKU:
- AEB5M7298H-01
- Availability:
- Ships Same Business Day
- Weight:
- 1.01 LBS
MSRP: $174.99Now: $149.14Was: $174.99 -
Main Bearing Set MS-909H-30
MICHIGAN 77
$99.99If you're rebuilding a small block Chevy engine or freshening up a tired long-block, main bearing clearance directly impacts oil pressure stability, bearing longevity, and overall engine reliability. The MS-909H-30 is engineered to restore proper...M77MS909H30- SKU:
- M77MS909H30
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$99.99 -
Main Bearing Set MS-429P-1
MICHIGAN 77
$55.99A quality main bearing set is the foundation of engine reliability, especially under high RPM and boost conditions where factory tolerances won't cut it. The MS-429P-1 delivers precision-engineered bearing surfaces that reduce friction, improve oil flow,...M77MS429P1- SKU:
- M77MS429P1
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$55.99 -
Main Bearing Set MS-2199P-20
MICHIGAN 77
$90.99A quality main bearing set is critical for engine longevity and reliable power delivery, especially in high-performance LS builds where tolerances demand precision. The MS-2199P-20 delivers OEM-grade construction with the exact undersize spec needed for...M77MS2199P20- SKU:
- M77MS2199P20
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$90.99 -
Main Bearing Set MS-2199P-10
MICHIGAN 77
$113.99A quality main bearing set is critical for engine longevity and reliability under high load conditions. The MS-2199P-10 delivers the precision fit and robust construction required for sustained performance in LS-Series builds, whether you're running...M77MS2199P10- SKU:
- M77MS2199P10
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
$113.99Qty in Cart: 0Quantity:Price:$113.99Subtotal: -
Main Bearing Set MS-2199P
MICHIGAN 77
$117.99The MS-2199P Main Bearing Set is engineered to restore proper bearing clearances and eliminate catastrophic engine failure in high-performance LS builds. Whether you're rebuilding after a race season or assembling a fresh short block, quality main...M77MS2199P- SKU:
- M77MS2199P
- Availability:
- Ships Same Business Day
- Weight:
- 1.11 LBS
$117.99 -
Main Bearing Set MS-2199HX
MICHIGAN 77
$166.99Main bearing failure in a high-output LS engine can happen without warning—and it's catastrophic. The MS-2199HX delivers the extra oil clearance you need to maintain film strength under sustained boost or elevated RPM, protecting your bottom end during...M77MS2199HX- SKU:
- M77MS2199HX
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
$166.99 -
Main Bearing Set MS-2199H-10
MICHIGAN 77
$161.99A worn or damaged main bearing set will destroy your engine's foundation—and your race results. The Main Bearing Set MS-2199H-10 delivers the precision clearances and durability required to keep your LS-Series engine running at peak performance, whether...M77MS2199H10- SKU:
- M77MS2199H10
- Availability:
- Ships Same Business Day
- Weight:
- 1.23 LBS
$161.99 -
Main Bearing Set MS-2199H-1
MICHIGAN 77
$155.99A quality main bearing set is critical to engine reliability and longevity, especially in high-performance applications where clearances and tolerances directly impact durability. The MS-2199H-1 is engineered to OEM specifications with tight tolerances...M77MS2199H1- SKU:
- M77MS2199H1
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$155.99 -
Main Bearing Set MS-2199H
MICHIGAN 77
$131.99A quality main bearing set is fundamental to engine longevity and reliability, especially in high-performance LS-series applications where sustained RPM and boost levels demand precision-engineered components. The MS-2199H delivers OEM-equivalent...M77MS2199H- SKU:
- M77MS2199H
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$131.99 -
Main Bearing Set MS-1432H-10
MICHIGAN 77
$119.99A quality main bearing set is foundational to engine reliability and longevity, especially in high-performance applications where clearances and material integrity directly impact power delivery and durability. The MS-1432H-10 delivers OEM-grade...M77MS1432H10- SKU:
- M77MS1432H10
- Availability:
- Ships Same Business Day
- Weight:
- 1.49 LBS
$119.99 -
Main Bearing Set MS-1038P-20
MICHIGAN 77
$99.99A quality main bearing set is fundamental to engine reliability and longevity. The MS-1038P-20 delivers precision tolerances and robust construction specifically engineered for Small Block Chevy platforms, ensuring consistent oil film strength and...M77MS1038P20- SKU:
- M77MS1038P20
- Availability:
- Ships Same Business Day
- Weight:
- 1.38 LBS
$99.99 -
Main Bearing Set MS-1038H-9
MICHIGAN 77
$89.99A quality main bearing set is the foundation of engine reliability—without proper bearing clearance and material integrity, you're risking catastrophic failure under load. The MS-1038H-9 delivers the precision tolerances and robust construction needed...M77MS1038H9- SKU:
- M77MS1038H9
- Availability:
- Ships Same Business Day
- Weight:
- 1.36 LBS
$89.99 -
Main Bearing Set MB5293SI
KING BEARINGS
$43.99A quality main bearing set is foundational to engine longevity and reliability, especially in high-performance LS applications where sustained boost and elevated RPM put constant stress on your crankshaft journals. The MB5293SI delivers OEM-grade...KEBMB5293SI- SKU:
- KEBMB5293SI
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$43.99 -
Main Bearing Set MB5013XP
KING BEARINGS
$125.99A quality main bearing set is foundational to engine longevity and reliability, especially in high-performance applications where load demands are extreme. The MB5013XP delivers OEM-equivalent precision with tighter tolerances and superior material...KEBMB5013XP- SKU:
- KEBMB5013XP
- Availability:
- Ships Same Business Day
- Weight:
- 1.33 LBS
$125.99 -
Main Bearing Set MB5013HP
KING BEARINGS
$119.99Main bearing failure is catastrophic—it ends your engine. The MB5013HP Main Bearing Set delivers the precision tolerances and material integrity needed to handle sustained high-RPM loads, whether you're chasing podium finishes or pushing limits on the...KEBMB5013HP- SKU:
- KEBMB5013HP
- Availability:
- Ships Same Business Day
- Weight:
- 0.99 LBS
$119.99 -
On Sale
ACL Bearings Main Bearing Set - SBC 5M909P-STD
ACL BEARINGS
MSRP: $50.99Now: $42.74Was: $50.99Main bearings are the foundation of engine reliability—they support your crankshaft under extreme loads and determine how well your engine can handle sustained RPM and boost. ACL's Duraglide coating technology reduces friction and wear, directly...AEB5M909P-STD- SKU:
- AEB5M909P-STD
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
MSRP: $50.99Now: $42.74Was: $50.99Qty in Cart: 0Quantity:Price:MSRP: $50.99Now: $42.74Was: $50.99Subtotal: -
On Sale
ACL Bearings Main Bearing Set - SBC 5M909P-10
ACL BEARINGS
MSRP: $50.99Now: $42.74Was: $50.99A quality main bearing set is the foundation of engine reliability and longevity. ACL's Duraglide main bearings are engineered to withstand sustained high-RPM loads while maintaining precise journal clearances, making them essential for both stock...AEB5M909P-10- SKU:
- AEB5M909P-10
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
MSRP: $50.99Now: $42.74Was: $50.99 -
Main Bearing Set SEA140M1X
SEALED POWER
$85.99Small block Chevy engines demand precision-engineered internal components to handle the stresses of high RPM and boost conditions. The SEA140M1X Main Bearing Set delivers the tight tolerances and robust construction necessary for reliable power delivery,...SEA140M1X- SKU:
- SEA140M1X
- Availability:
- Ships Same Business Day
- Weight:
- 1.37 LBS
- MFG Part #:
- 140M1X
$85.99
