The old model cannot be left behind either.
New product information!
This is a big valve cylinder head compatible with the normal cylinder made by Hispeed Racing.
The applicable cylinder bore is genuine ~57φ (148cc).
Compatible with engines of the same type from one generation ago, including CT125 (JA55).
This will be a product that has never existed before.
This is because there is no demand for heads for genuine engine displacement overseas.
This is one of the long-awaited products that we wanted to include in the 8Ft lineup for Japanese customers.
The valve size is as large as possible, the genuine product is In: 24, Ex: 21φ, and this product is In: 27, Ex: 22φ.
Not only that, the intake and exhaust ports are also much wider compared to the stock version.
Those who have seen the genuine ports will know that they are quite thin.
No matter how much you try to raise the bore or adjust the intake and exhaust, this will become a bottleneck.
It would be great if you combined this product with the intake manifold sold by T Company!
Furthermore, if you combine it with a lightweight rocker arm, it will be a real hit!
As a bundled item with this product,
① Reinforced valve spring ② A7075 super duralumin valve retainer ③ Big valve ④ High camshaft ⑤ Valve stem seal.
When you insert this head, you can quickly reach the original rev limit of 8500 rpm.
(According to the manufacturer's published value, it supports up to 15,000 rpm.)
Therefore, it seems necessary to consider rewriting the ECU and introducing a subcomputer.
Also, internal engine parts and crankshaft supports that can handle high engine speeds are necessary.
The custom swamp is even deeper and wider...