YX 140 Z40 Performance Cam Kit

YX 140 Z40 Performance Cam Kit – Max Out Your Power
Serious about performance? This Z40 cam kit is a proven upgrade for your YX140, unlocking up to 2BHP or a 20% gain in engine output. More revs, better throttle response, and stronger pull across the range – it’s a no-brainer for pit bike riders chasing more bite.

Whether you’re track-prepping or just want more go on the trails, this kit delivers without the faff.

Specifications:

• ✅ Z40 Performance Camshaft – Longer lobe duration for higher revs and extra power

• ✅ Valve Lift (Intake & Exhaust): 6.7mm – +0.4mm over standard

• ✅ Valve Springs: Approx. 10% stiffer for higher RPM handling

• ✅ Camshaft Length: 70mm

• ✅ Large Bearing OD/ID: 42mm / 25mm

• ✅ Small Bearing OD/ID: 28mm / 15mm

What’s Included:

• 1x Z40 Performance Camshaft

• 1x Set of Uprated Valve Springs

• 1x Performance Cam Sprocket

Fitment:

• ✅ YX140 – Direct fit

• ✅ YX125 – Requires bearing swap

• ✅ ZS110 / ZS125 – Requires bearing swap

• ✅ ZS140 – Direct fit

• ✅ Lifan 140 – Requires bearing swap

Note:
⚠ Compatible with YX engines as standard. For ZS and Lifan engines, check bearing sizes – bearing swaps are needed for some models.
🔧 Straightforward to install – loads of guides available online if you’re DIY’ing it.

Keywords: YX140 camshaft upgrade, Z40 performance cam, pit bike camshaft kit, YX125 cam swap, race cam YX140, ZS140 camshaft.