Head. YX 140/149 RED TAG RACE Gas flowed 19 BHP

Head. YX 140/149 RED TAG RACE Gas flowed 19 BHP
  • Click to enlarge

£276.00 £230.00 ExVAT

Product Code: 0146

Head kit YX 140/150 Stage III RED TAG engine tune up kit 19 bhp

This head fits both YX 140 and YX 149


Full head kit assembled ready to bolt on.

What’s in the box?

  • Fully gas flowed head
  • Correct squish band for 56mm piston
  • NBR cam shaft 6.7mm lift with sprocket
  • Race valve spring kit
  • Valves 27 inlet 23 exhaust coated non polished
  • 3 Angle valve seats
  • Top set of gaskets
  • 56mm high comp piston kit 13mm pin


We recommend you don’t rely on the timing marks and set valve timing via LCA, they way it prevents valve damage and will give you the best performance. Reason is some engines have the crank sprocket pressed on not 100% correct.

You need a minim of 2mm piston to valve clearance 12 degrees before and after TDC on both valves, any less you will have piston to valve contact at higher revs resulting in a valve dropping.


Product Code0146