Your cart is empty.
Your cart is empty.Product Description
- This head is built with a rounded and squared shape.
- If your engine wants more power, give it the Aluminium High Performance Head and you'll feel a big difference when you hit the throttle.
- The Aluminium High Performance Head increases the horse power of your 80cc/66cc 2-Stroke Bicycle Engine and this greatly cools off the engine.
- Would result better performance and longer life for your 2 Stroke Bicycle Engine.
Jacob
2025-08-02 13:20:40
Purchased for my China girl hoping to get a bit more low end tourque out of her. After the package arrived I eagerly took my bike out to the shop for the install. To my surprise the new head wouldn't fit...got out the tape measure and quickly deduced that my engine was not a 66cc as I had thought, it was a 48cc motor with different stud spacing. I pondered for a few days on whether I should return this beautiful new head, or upgrade to the 66. Circumstance decided for me when I was out riding, my chain must have come loose and bound up, cracking the crank case and completely trashing the clutch cover. (I only have a cheap flux core welder, so repairs on cast aluminum are out of my grasp😣). I ordered the new engine kit and it has just Arrived. I have began assembling it, but even after it's all put together I will still have to wait till the break in period is up before I can use the new high compression head...sux. I have inspected it, and appears to be very well built. Even the paint job is great. Very sturdy and milled out well. I cannot speak to the performance of it just yet, but I will update once I can finally use it. The moral of the story is, measure your engines bore before you order, you might just end up with a nice paper weight.UPDATE: installed high compression head a while back and it is more than I ever could have hoped for. The new engine is a good deal more powerful than my first, but when you put this bad boy on you can practically smoke the tires. 5 star all the way.
Master AF
2025-07-29 10:00:17
I really like the added power. Looked a lot better on my stock cylinder but I ran the thing so hard it hairline fractured my stock jug. This head has had over 1000 miles put on it since I installed it, and I've loved every second of it. It's survived quite an abusive life since I've become the owner and it hasn't quit on me yet!! :DMost people shy away from this head, but if you get from DONSP1986 seller you're going to enjoy it. Quality head for a competitive price. I recommend replacing acorn nuts with a standard nut otherwise you may not be able to get it tight enough. DON'T overtighten, and you'll be fine! :)
Todd
2025-06-10 18:03:50
Haven't seen many reviews on that product, and I guess that should of been a warning sign.The paint started bubbling and flaking off only after a few uses, to expose a bronze looking metal underneath.The head is also much smaller than I anticipated, and I truly wonder about the cooling potential of this product - I would almost think the stock head is better.
Bryce S.
2025-04-26 17:03:57
top speed went from 36 down to 28 and performance in general just seems worse
Will
2025-04-05 13:08:35
For less than $30 (what I got it for) it is well worth it. Too be honest, it barely ( if that) increases compression enough to notice when driving your china kit motorized bicycle. The real value for this head is that this dissipates heat much better than the stock head, giving you cooler engine temps and thus a better ride. If you really want increased compression, invest in a copper head gasket.If you have little money and want more power out of your 66 cc engine, mess with the exhaust and intake first. You will receive much better power results there than you will by buying a CNC head.NOTE: An engine head gives better compression by 2 ways: The seal between engine and head and changing the geometry of the pocket (where the gas and air compress to then combust). The new head is CNC machined flat on the contact point, your china engine is not as precise. So get a CNC head, AND a better gasket than the stock crap (even gasket maker is better) then you will feel results.
Morgan
2025-04-04 10:48:12
I was excited to get the added power this head was suppose to give my motor bike. Unfortunately it made the bike way less powerful! Don't buy this. Go with a more expensive one. Again this head offers less power than the stock head.
mike danowski
2025-02-10 16:16:43
excellent quality
Psykadelik Kreationz
2025-01-01 12:43:10
Replaced stock cylinder head with this heavy bad boy and sure enough my motor is running like a champ. Great compression and phenomenal cooling for the engine. I Will be buying another for my next build.
Recommended Products
$308.89
$ 99 .00 $99.00
$59.99
$ 28 .99 $28.99