HPSP RACING SUPER VALVE RACING LC135 RS150

HPSP Racing Super Valve is an aftermarket oversized intake/exhaust valve for the Honda RS150 and Yamaha LC135, sold as 1 set of 2 pieces. It is used by engine builders to increase valve head diameter for more airflow when paired with a ported/modified cylinder head.

• Oversized racing valve for Honda RS150 and Yamaha LC135 engines
• Multiple head diameter and length options to match different port/head work
• Sold as 1 set = 2 pieces
• Genuine HPSP Racing item (per seller)
• For engine builders upgrading cylinder head airflow

Brand

HPSP Racing

Product

Super Valve Racing (oversized engine valve)

Model/SKU

RS150 / LC135

Type

Racing intake/exhaust valve, 1 set = 2pcs

Main spec (RS150)

20x77.5mm, 22x77.5mm, 23x77.5mm, 23x78.5mm, 25x78.5mm, 26x78.5mm (diameter x length)

Main spec (LC135)

19-30mm head diameter options in pairs; exact length not specified by seller

Material

Not verified

Compatibility

Honda RS150, Yamaha LC135 (confirm valve seat/port size with seller)

Choose diameter to match your cylinder head porting and seat size. Oversized valves generally need matching seat cutting and port work; this is not a plug-and-play swap onto a fully standard head. RS150 sizes are given as diameter x length; LC135 sizes are diameter only, confirm exact length with the seller.

Fitting requires removing the cylinder head, cutting/matching the valve seat, checking guide clearance and resetting valve clearance. Recommended to be done by an experienced engine builder. Package is the valve set only; springs, seals and retainers are sold separately.

HPSP Racing oversized valve set for RS150 and LC135 engines in multiple diameter/length options for ported cylinder head builds.