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SpeedFactory Racing 4140 Cylinder Head Stud Kits
The SpeedFactory Racing 4140 cylinder head stud kits are designed to provide superior clamping force, preventing cylinder head lift and head gasket failure in high-performance, forced induction (turbo/supercharged) Honda®/Acura® engines. The studs maintain a tight seal on the cylinder head under extreme boost, crucial for preventing combustion gases from escaping. The 4140 steel head studs resist stretching far better than OEM head bolts, essential for high-horsepower reliability. Each kit includes forged nuts and washers designed to distribute clamping loads evenly across the engine block. Select the kit for your application needs. Key features: * 210,000 psi tensile rating * Hex broach on the top of the stud for ease of installation and a dog point design for superior preload * Oversized forged 12-point nuts and hardened parallel ground washers for superior load distribution compared to smaller nuts and washers * Direct drop-in replacement for OEM head bolts * Studs feature a corrosion-resistant black oxide coating
Not Yet Reviewed
$142.49
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$177.54
SpeedFactory Racing Exhaust Manifold Stud Kits
Upgrade your engine build with SpeedFactory Racing exhaust manifold stud kits, engineered to deliver superior clamping force, improved sealing, and long-lasting durability compared to factory hardware. Available in premium titanium and high-strength stainless steel configurations, these kits are designed to resist corrosion, eliminate rust-related failures, and withstand extreme exhaust temperatures. Featuring precision-machined studs with integrated hex-key installation tips, along with matching washers and 12-point nuts, SpeedFactory manifold studs provide a secure, professional-grade fastening solution for Honda®, Acura®, Toyota, Mitsubishi, and other performance applications. Whether you're building a street car, race car, or high-boost turbo setup, SpeedFactory stud kits help prevent leaks, stripped threads, and hardware failures while adding a clean, race-inspired finish to your engine bay. Choose the stud kit best suited for your engine requirements.
Not Yet Reviewed
$37.90
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$138.64
SpeedFactory Racing Titanium Cam Gear Stud Kits
Upgrade your factory cam gear hardware with the SpeedFactory's titanium cam gear stud kits, engineered for Honda® D-Series, B-Series VTEC, and H-Series applications. Precision-machined from premium Ti-6Al-4V titanium, these kits deliver exceptional strength, reduced weight, and outstanding corrosion resistance compared to OEM steel fasteners. Featuring an innovative low-profile stud design that increases thread engagement within the camshaft, SpeedFactory cam gear studs help improve fastener retention and reduce the risk of keyway damage under high-performance and racing conditions. Each kit includes titanium studs, matching nuts, and washers for a clean, professional installation, making them the perfect upgrade for enthusiasts seeking enhanced reliability, durability, and motorsport-proven performance. To help ensure proper fitment, select the cam gear stud kit designated for your engine type.
Not Yet Reviewed
$16.95
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$39.89
SpeedFactory Racing Cylinder Extreme-Duty Head Stud Kits
The SpeedFactory Racing cylinder extreme-duty head stud kits are engineered for high-performance engines, specifically to prevent cylinder head lift and blown head gaskets in high-boost (30+ psi) drag racing applications. Made from ultra-strong L19 material, these studs offer more clamping force and strength than standard 8740 chromoly studs, ensuring engine reliability. Each kit includes forged nuts and washers designed to distribute clamping loads evenly across the engine block. Key features: * High-strength (260,000 psi tensile strength) material keeps the cylinder head securely clamped to the engine block under extreme combustion pressures * Designed for engines producing high boost (typically 30 psi) to help prevent gasket failures * Extreme Material Strength—L19 material outperforms standard 8740 chromoly steel, providing superior clamping force * Easy Installation—head studs feature a hex broach on the top, allowing for simple installation without removing the engine * Superior Load Distribution—these kits include oversized nuts to distribute load more evenly * They are a direct drop-in replacement for OEM head bolts
Not Yet Reviewed
$396.00
SpeedFactory Racing Titanium Transmission Mount Hardware Kits
Drop weight and look great with SpeedFactory Racing's all-new titanium transmission mount hardware kits. The studs and flange bolt are longer than OEM hardware, giving full thread engagement into the transmission housing and extra length through the mount to accommodate for thicker aftermarket billet aluminum mounts. As with all SpeedFactory titanium products, these are manufactured using Ti-6AL-4V titanium featuring high strength, low weight, and superior corrosion resistance—these will not corrode like your stock steel bolts! The stud design incorporates a tapered tip with a 5mm hex key that allows them to be easily installed using an Allen wrench, and 6-point titanium flange nuts and washers are included. The M12 flange bolt features SpeedFactory's ultralight, hollow-domed 6-point design. Kit includes: * (2) M12 x 1.25mm x 75mm titanium transmission mount studs * (2) M12 x 1.25mm titanium 6-pt. flange nuts (17mm head) * (2) M12 titanium washers * (1) M12 x 1.25mm x 40mm titanium 6-pt. flange bolt (17mm head) * Confirmed fitments: EG / DC chassis with B-Series or D-Series engine/transmission and aftermarket billet aluminum transmission mounts. May fit other Honda/Acura applications.
Not Yet Reviewed
$69.82
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$79.79
