taco eater :
John Stevens from Worcester, MA United States
A little heads up would be nice letting the uneducated know even 93 octane from the pump WILL PING!!! But its a great head otherwise for anyone willing to buy race gas.
I ended up using this head for my Yamaha Chappy LB50 Polini 70cc kit which lets me run pump gas while still giving that needed low end power gain it sooooo desperately needed! https://www.treatland.tv/puch-70cc-puch-70cc-hi-compression-head-p/puch-hi-comp-head-70cc-old.htm
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Hold on, here comes the powerband
April 20, 2018
taco eater :
Nathan-David Sapanza from San Marcos, CA United States
Wow!... slapped this puppy on and it improved the low end torque right away.... the powerband hits hard at 4500 RPMs so I’d move alittle forward on the Ped if I was you... Puch Maxi, 17x38, Boss pipe, 17mm Bing Clone (wide open Choke) Supreme Fuel (no Booster).. thanks Dana. Treatland !
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O-ring?
September 13, 2016
taco eater :
Countryobtunning from Princeton , MA United States
This head works really well! I had a cylinder head mating surface that was bitten by jaws and this baby sealed it up! Only issue is I always battle with sealing up the spark plug on these aftermarket heads mybe a copper washer that I can really crush will fix all that
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compression heaven
August 31, 2014
taco eater :
Bruce Cowgill from Fruitland, ID United States
Noticeable power increase and the fins don't vibrate like the k-star head I replaced.
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Best head you can buy!
March 20, 2014
taco eater :
tyler collins from Clinton , CT United States
Love this thing, using it on my athena ajh reed kit and I'm getting 200psi cold compression. This head rocks.
CANNOT use pump gas!!! 
Hold on, here comes the powerband