KPMI Racing Valve Spring Kit Honda CRF450R (2013–2016)
Honda CRF450R Racing Valve Spring Kit – KPMI (30-31600)
Unlock your CRF450R’s full potential with the KPMI® Racing Valve Spring Kit, designed for precision, durability, and high-RPM performance. Each spring is crafted from Kobe Super-Clean Chrome Silicon Wire and engineered using advanced design simulation to deliver race-ready reliability under extreme conditions.
✅ What’s Included
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Complete valve spring set (intake and exhaust)
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Lightweight heat-treated steel retainers
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Designed for compatibility with OEM integrated seal/base (OE# 3610212)
📦 Fitment
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2013 – 2016 Honda CRF450R
Direct drop-in upgrade for OEM cylinder heads — no machining required.
🛡️ Warranty Info
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Manufacturer warranty against defects in materials and workmanship
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Precision-engineered in the USA
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Suitable for both stock and high-performance racing builds
🔑 Key Features
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Premium Kobe Super-Clean Chrome Silicon Wire for ultimate fatigue resistance
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80 lbs seat pressure / 205 lbs @ 0.435” lift (max)
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Heat-treated, stress-relieved, and shot-peened for maximum life
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Optimized harmonics and spring rate balance for smooth, reliable valve motion
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Beehive spring design with lightweight retainers for reduced mass and improved throttle response
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Ideal for high-RPM and boosted performance applications
💲 Price & SKU
Price: $207.95
SKU / Part Number: 191-21015 | KPMI 30-31600
Estimated Shipping Weight: 0.51 lbs
Handling Time: Ships Next Business Day
📦 Shipping Information
In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
- Sneakers: 1–2 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.