Spears Racing
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Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from Spears Racing, Retail Company, 15253 S Inheritance Way, Manteca, CA.
08/01/2026
Happy Friday! Featuring the Spears Racing Yamaha R3 Detent Spring. Built to give you quicker, more precise shifts—whether you’re hitting apexes on track or carving up the street.
✔️ Faster, easier shifting
✔️ Reduces missed shifts & false neutrals
✔️ Improved gear engagement speed
✔️ Race-proven performance
More confidence in every corner. Less hesitation on every shift. 🏁
🔗www.spearsracingusa.com
08/01/2026
🔥 Stop Head Gasket Failures Before They Start. 🔥
When you’re building a high-compression engine, stock head bolts just aren’t enough. Upgrade to the Spears Racing Yamaha FZ/MT/R7 Cylinder Head Stud Kit and get the clamping force your engine needs to stay sealed under extreme race conditions.
🏁 Heat-treated 8740 chrome moly steel
💪 Centerless ground with rolled threads for maximum strength
🔩 Prevents head gasket leakage in high-performance engines
⚙️ Torque studs to 10–15 ft-lbs, head nuts to 40–42 ft-lbs
✅ Trusted by top engine builders and racers
This is a must-have upgrade for serious race engines running higher compression, big bore kits, or demanding track use.
Also available for:
• Suzuki SV650 (1999–2023)
• KTM RC390 (2013–Present)
🌐 Shop now at www.spearsracingusa.com
07/31/2026
⚙️ Upgrade Any Ride. Shift Smarter.
The HM Stand Alone Blipper Shifter adds seamless upshift and backshift functionality to any ride-by-wire motorcycle—whether it already has a quickshifter/blipper or not.
🏁 Plug-and-play installation
🧠 Instant self-learning technology for effortless setup
⚙️ Fully customizable programming (PRO Version) with RPM and gear-by-gear adjustments for precise shifts and backshifts in every riding condition.
From the street to the racetrack, experience smoother, faster, and more consistent shifting every time you ride.
07/30/2026
🏁 Every ounce counts. Every link matters.
When you’re chasing podiums, reducing rotating mass can make all the difference. That’s why racers trust DID and EK lightweight drive chains for maximum performance where it counts.
🔥 DID 415ERZ
✔️ Lightweight race chain
✔️ Reduced rotating mass
✔️ Quicker acceleration
✔️ Sharper throttle response
⚠️ Race use only – not for street use
🔥 EK 415R – 134 Link
✔️ Purpose-built for competition
✔️ Lightweight, high-performance design
✔️ Perfect for small-displacement race bikes
⚠️ Race use only
Built for the track. Proven by racers.
🏁 Spears Racing – Performance Without Compromise
🛒 Shop now at www.spearsracingusa.com
🏁 Protect your bike without the compromise.
The Spears Racing Shark Fin / Toe Guard was purpose-built with the little bikes in mind. Unlike other designs that require drilling massive holes in your swingarm, our innovative design delivers maximum protection while keeping your bike intact.
From track days to race weekends and everyday street riding, riders around the world trust Spears Racing for proven safety, durability, and peace of mind.
Available for:
🔸 Suzuki SV650 (1999–2018)
🔸 Yamaha YZF-R3 (2015–Current)
🔸 Kawasaki Ninja EX250/300/400 with Swingarm Spools (2008–Current)
🔸 Kawasaki ZX-4RR (2023–Current)
🔸 Kawasaki Ninja 500 (2024)
Upgrade your protection. Ride with confidence.
🛒 Shop now at www.spearsracingusa.com
07/30/2026
Shift smarter. Shift faster. ⚡️
The HM Push & Pull Quickshifter delivers precision performance with clutchless upshifts and downshifts—built for riders who demand speed, control, and consistency on every ride.
Dial in your sensitivity. Feel the difference.
🏁 Race-proven performance
⚙️ Easy adjustability
🔥 Built for serious riders
Tap in and upgrade your ride.
Small upgrade. Big difference. ⚡️
Spears Racing Spool Sliders — built to protect and made to perform.
Precision CNC machined from premium aluminum, these sliders are designed for strength, durability, and a perfect fit. Easy to install with no modifications, they help protect your swingarm and rear-end components when it matters most.
Lightweight. Reliable. Race proven.
Protect your bike. Upgrade your setup 🔧
www.spearsracingusa.com
🔧 Protect your EX650 before it becomes an expensive problem. 🏁
Stock automatic cam chain tensioners can back out during high RPM deceleration, allowing cam timing to momentarily slip — risking bent valves and serious engine damage. ⚠️
Hydraulic tensioners can also over-tension the chain under high oil pressure, leading to premature guide wear.
The Spears Racing Manual Cam Chain Tensioner keeps timing consistent and gives you the reliability your Kawasaki Ninja EX650 deserves. 💪
✔️ Consistent cam chain tension
✔️ Helps prevent timing issues
✔️ Reduces premature guide wear
✔️ Built for performance & reliability
👉 www.spearsracingusa.com
07/30/2026
⚙️ Precision starts with the details.
Upgrade your HM Quickshifter setup with genuine HM Grub Screws with Matching Nuts. Manufactured in the U.K. to HM Quickshifter’s exact specifications, these fully threaded 6mm screws provide the strength, precision, and reliability riders demand.
✔️ Available in Left & Right-Handed Threads
✔️ Fully Threaded 6mm Design
✔️ Includes Matching Nut
✔️ U.K. Manufactured to HM Specifications
When every shift counts, trust the components designed to perform.
🏁 Available now at Spears Racing.
⏱️ How many HOURS are really on your engine? 🏁
Years don’t tell the full story — runtime does. That’s why Spears Racing now offers the iMETER™ Wireless Hour Meter, the easiest and most accurate way to track TRUE engine hours. 🔥
✔️ Peel-and-stick install — NO wiring✔️ Starts & stops automatically from engine vibration✔️ Tracks actual run time (not trailering)✔️ Waterproof & shock-resistant (IP-68)✔️ Battery life up to 8 years✔️ Works on 2 & 4-stroke bikes, ATVs & UTVs✔️ USA designed, engineered & tested 🇺🇸
Know exactly when it’s time for maintenance, service, or a full engine refresh. Don’t guess — track it. 💪
🔗 www.spearsracingusa.com
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Address
15253 S Inheritance Way
Manteca, CA
95336
Opening Hours
| Monday | 9am - 5pm |
| Tuesday | 9am - 5pm |
| Wednesday | 9am - 5pm |
| Thursday | 9am - 5pm |
| Friday | 9am - 5pm |