Main Cap Fastener Kits
Circle Track Main Cap Fastener Kits at JJ Motorsports
Main Cap Fastener Kits are critical for maintaining crankshaft alignment in circle track racing engines, offering rugged bolts and studs engineered to withstand high-pressure forces during races. These kits ensure unwavering reliability when used with other engine stabilization components.
Shop trusted brands like Chevrolet Performance for LS series bolts, ARP for SBF main stud kits. Explore related categories such as Engine Fastener Kits for complete hardware solutions or Circle Track Oiling Systems for lubrication upgrades.
Top Circle Track Main Cap Fastener Kits
- Chevrolet Performance Main Cap Bolt LS Series Inner 6-Bolt w/Tray Stud 12560273 – Main Bolt with Hex Head for 6-Bolt Mains, made of Steel with Black Oxide finish, designed for GM LS-Series engines in circle track applications.
- ARP SBF 351 Dart SHP Main Stud Kit 154-5613 – Main Stud Kit including Hex Nuts for 4-Bolt Mains, constructed from Chromoly with Black Oxide finish, compatible with Dart SHP and Small Block Ford engines for enhanced circle track performance.
- ARP SBF Main Stud Kit 254-5601 – SBF Main Stud Kit with 1/2 in Studs and Hex Nuts for 4-Bolt Mains, made from Chromoly with Black Oxide finish, suitable for R Block Small Block Ford applications in racing engines.
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
-
ARP SBF Main Stud Kit 154-5401
ARP
$67.99Factory main bolts can't handle the stress of high-RPM engine building, forced induction, or sustained performance driving. ARP's chromoly stud kit replaces those weak points with fasteners engineered to maintain clamping force under extreme cylinder...ARP154-5401- SKU:
- ARP154-5401
- Availability:
- Ships Same Business Day
- Weight:
- 2.32 LBS
- MFG Part #:
- 154-5401
$67.99 -
ARP SBF Main Bolt Kit - Fits 351W 2-Bolt 154-5003
ARP
$71.99Factory main bolts are a critical weak point in high-performance 351W builds—under boost or sustained RPM, they flex and fail, risking catastrophic engine damage. ARP's chromoly main bolt kit eliminates this vulnerability with premium materials and...ARP154-5003- SKU:
- ARP154-5003
- Availability:
- Ships Same Business Day
- Weight:
- 2.51 LBS
- MFG Part #:
- 154-5003
$71.99 -
ARP SBF Main Bolt Kit - Fits 2-Bolt 154-5001
ARP
$53.99Stock SBF main bolts can't handle the stress of high-RPM performance or forced induction applications—they'll fail when you need reliability most. The ARP SBF Main Bolt Kit upgrades your Small Block Ford's bottom end with 8740 chromoly fasteners...ARP154-5001- SKU:
- ARP154-5001
- Availability:
- Ships Same Business Day
- Weight:
- 1.89 LBS
- MFG Part #:
- 154-5001
$53.99Qty in Cart: 0Quantity:Price:$53.99Subtotal: -
ARP Ford Main Stud Kit 151-5402
ARP
$131.99Factory fasteners fail under sustained boost and high RPM loads—ARP main studs are engineered to prevent catastrophic engine failure by maintaining crankshaft stability where it matters most. This chromoly stud kit delivers the clamping force and...ARP151-5402- SKU:
- ARP151-5402
- Availability:
- Ships Same Business Day
- Weight:
- 2.52 LBS
- MFG Part #:
- 151-5402
$131.99 -
ARP SBC Main Stud Kit - Dart Little M Block 134-5801
ARP
$152.99Main studs are critical to engine block integrity under high-load conditions, and the ARP SBC Main Stud Kit delivers the clamping force and reliability needed for forced induction, nitrous, and high-RPM applications. Built from chromoly steel and...ARP134-5801- SKU:
- ARP134-5801
- Availability:
- Ships Same Business Day
- Weight:
- 3.31 LBS
- MFG Part #:
- 134-5801
$152.99 -
ARP SBC Main Stud Kit Dart SHP Block 134-5605
ARP
$117.99A bulletproof fastening solution is non-negotiable when you're building a Small Block Chevy engine that actually performs. ARP's chromoly main studs eliminate the stretch and flex inherent to factory bolts, ensuring consistent clamping force and block...ARP134-5605- SKU:
- ARP134-5605
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- MFG Part #:
- 134-5605
$117.99Qty in Cart: 0Quantity:Price:$117.99Subtotal: -
ARP SBC Main Stud Kit w/ World Motown Iron Block 134-5603
ARP
$112.99A stroker or high-rpm Small Block Chevy demands the structural integrity that factory main bolts simply cannot deliver. ARP's chromoly main studs provide the clamping force and reliability needed to keep your iron block together under sustained boost,...ARP134-5603- SKU:
- ARP134-5603
- Availability:
- Ships Same Business Day
- Weight:
- 4.27 LBS
- MFG Part #:
- 134-5603
$112.99 -
ARP SBC Main Stud Kit 134-5601
ARP
$103.99Small Block Chevy engine builders know that factory main bolts are the first component to fail under high boost, nitrous, or competition horsepower. ARP's 134-5601 Main Stud Kit replaces those weak links with premium chromoly studs that handle sustained...ARP134-5601- SKU:
- ARP134-5601
- Availability:
- Ships Same Business Day
- Weight:
- 3.33 LBS
- MFG Part #:
- 134-5601
$103.99 -
ARP SBC Main Stud Kit 134-5501
ARP
$80.99A stock Small Block Chevy main fastening system simply won't hold up under serious power. The ARP SBC Main Stud Kit 134-5501 replaces factory bolts with chromoly studs that deliver superior clamping force and reliability, whether you're building a...ARP134-5501- SKU:
- ARP134-5501
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- MFG Part #:
- 134-5501
$80.99 -
ARP SBC Main Stud Kit 134-5402
ARP
$67.99A stock main bolt setup won't cut it if you're serious about engine reliability under boost or high RPM loads. The ARP SBC Main Stud Kit 134-5402 replaces those factory bolts with chromoly studs that deliver superior clamping force and...ARP134-5402- SKU:
- ARP134-5402
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- MFG Part #:
- 134-5402
$67.99 -
ARP SBC Main Bolt Kit For Dart SHP Block 134-5204
ARP
$70.99If you're building a serious small block Chevy engine, your main bolts are the foundation of reliability under boost or nitrous. ARP's chromoly main stud kit for Dart SHP blocks provides the clamping force and material strength needed to keep your...ARP134-5204- SKU:
- ARP134-5204
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- MFG Part #:
- 134-5204
$70.99 -
ARP SBC Main Bolt Kit - Fits 4-Bolt - L/J 6pt. 134-5202
ARP
$59.99Stock main bolts can fail under high RPM and boost conditions, leaving you stranded or facing catastrophic engine damage. ARP's chromoly main bolt kit provides the clamping force and fatigue resistance your built Small Block Chevy needs to survive...ARP134-5202- SKU:
- ARP134-5202
- Availability:
- Ships Same Business Day
- Weight:
- 2.67 LBS
- MFG Part #:
- 134-5202
$59.99Qty in Cart: 0Quantity:Price:$59.99Subtotal: -
ARP SBC Main Bolt Kit - Fits 2-Bolt - S/J 134-5002
ARP
$41.99When you're building or rebuilding a high-performance small block Chevy, your main bolts are critical—they're the only thing keeping your crank in place under extreme load and RPM. ARP's chromoly main bolt kit delivers the strength and reliability you...ARP134-5002- SKU:
- ARP134-5002
- Availability:
- Ships Same Business Day
- Weight:
- 1.83 LBS
- MFG Part #:
- 134-5002
$41.99 -
ARP SBC Main Bolt Kit - Fits 2-Bolt - L/J 134-5001
ARP
$42.99A quality main bolt kit is non-negotiable when building or refreshing a Small Block Chevy engine—it's the foundation that keeps your crankshaft secure under load. The ARP High Performance Series delivers the clamping force and reliability you need for...ARP134-5001- SKU:
- ARP134-5001
- Availability:
- Ships Same Business Day
- Weight:
- 1.98 LBS
- MFG Part #:
- 134-5001
$42.99 -
ARP Main Stud Kit - SBF 302 Dart SHP Block 154-5612
ARP
$117.99Main studs are the foundation of engine reliability under extreme load—especially critical when you're pushing a Small Block Ford beyond stock limits. The ARP Main Stud Kit for your Dart SHP block replaces factory bolts with chromoly studs that deliver...ARP154-5612- SKU:
- ARP154-5612
- Availability:
- Ships Same Business Day
- Weight:
- 3.86 LBS
$117.99 -
ARP SBC Main Stud Kit 134-5401
ARP
$71.99When you're building or rebuilding a Small Block Chevy engine, your main studs are the foundation of reliability under extreme load. ARP's chromoly main stud kit delivers the clamping force and tensile strength needed to keep your crankshaft secure...ARP134-5401- SKU:
- ARP134-5401
- Availability:
- Ships Same Business Day
- Weight:
- 2.44 LBS
- MFG Part #:
- 134-5401
$71.99
