HPSP CAMSHAFT LC135 Y15 Y16ZR VVA HP1 HP2 HP3 HP4 STD-58 H.COMP 62-65mm 57-60mm 62-68mm 65-70mm
HPSP racing camshaft for the Yamaha LC135/Y15ZR and Y16ZR VVA engine families. Sold in graded HP1-HP4 profiles matched to specific bore/big-bore setups, for riders upgrading valve timing/lift beyond the stock camshaft.
Option
In stock · Estimated delivery: 3–7 business days (West Malaysia)
Product Details
Overview
HPSP racing camshaft for the Yamaha LC135/Y15ZR and Y16ZR VVA engine families. Sold in graded HP1-HP4 profiles matched to specific bore/big-bore setups, for riders upgrading valve timing/lift beyond the stock camshaft.
Key Features
- Separate profiles for VVA (Y16ZR) and non-VVA (LC135/Y15) engines
- Graded HP1 to HP4 profiles matched to bore size and oil-jet stage
- Aftermarket performance camshaft, not a stock replacement part
- HPSP Racing branded product
Specifications
- Brand
- HPSP Racing
- Product
- Racing camshaft
- Type
- Performance/high-lift camshaft
- Compatibility
- Yamaha Y16ZR (VVA); Yamaha LC135/Y15ZR (non-VVA)
Variants & Setup
Y16ZR VVA: HP1 for STD-58mm high-compression block, HP2 for 62-65mm bore. LC135/Y15: HP1 for 57-60mm bore, HP2 for 62-68mm bore (jet 2-4), HP3 for 65-70mm bore (jet 4-6), HP4 for 65-74mm bore (jet 6-8). Match the profile to your actual block bore and oil-jet stage; an oversized profile on a small bore can hurt low-end response.
Installation & Package
Fitting requires opening the cylinder head/valve cover and resetting cam timing; this should be done by a mechanic experienced with LC135/Y15/Y16ZR VVA engines. Package: 1x camshaft.
Summary
HPSP racing camshaft in HP1-HP4 profiles for Yamaha LC135, Y15ZR and Y16ZR VVA engines, matched to bore and oil-jet stage.
Important Notes
Confirm whether your engine is VVA (Y16ZR) or non-VVA (LC135/Y15ZR) before ordering, as the two camshaft types are not interchangeable. This is a racing part; performance gains depend on the rest of the engine build and are not guaranteed figures.
Frequently Asked Questions
No, VVA and non-VVA camshafts use different profiles and are not interchangeable.
Match it to your current block bore size/jet stage; ask your mechanic if unsure.
It is designed for performance/modified setups; effects on a fully stock engine may be limited.
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