![Nippon Racing Japan pistons + piston rings 4-piece P30 JDM Style B20 (Honda B-Serie engines) | NP-P30B20-X | A4H-TECH / ALL4HONDA.COM main product photo](https://www.a4h-tech.com/media/catalog/product/cache/b95a08d73eb773480bc6ad14fbd63dcf/n/p/np-p30b20-1.jpg)
Nippon Racing Japan pistons + piston rings 4-piece P30 JDM Style B20 (Honda B-Serie engines)
90% of the products in our store are in internal or external stock and we can often process your order quickly (varying from a few hours to a number of business days).
Naturally it is possible that a product has an (unexpected) longer delivery time.
Upon receipt of your order, we will always inform you about this and offer any available alternatives. So keep a close eye on your mailbox.
We deliberately provide stock information about our products afterwards, because many suppliers do not offer a ''stock link system'' and we do not want to show '' estimates '' in advance, like many other webshops do (which are often incorrect and give you wrong information in advance). We only want to give our customers actual information on the moment of processing the order so we don't mislead our customers.
If you need a product VERY quickly and you need to be sure that we have it in stock, please e-mail or call us or send a message via ''ask a question about this product'' below in the product description.
![](https://www.a4h-tech.com/media/wysiwyg/1.png)
![](https://www.a4h-tech.com/media/wysiwyg/2.png)
![](https://www.a4h-tech.com/media/wysiwyg/4.png)
![](https://www.a4h-tech.com/media/wysiwyg/5.png)
![](https://www.a4h-tech.com/media/wysiwyg/6.png)
![](https://www.a4h-tech.com/media/wysiwyg/7.png)
![](https://www.a4h-tech.com/media/wysiwyg/8.png)
![](https://www.a4h-tech.com/media/wysiwyg/dhl.png)
![](https://www.a4h-tech.com/media/wysiwyg/ups.png)
![](https://www.a4h-tech.com/media/wysiwyg/postnl.png)
![](https://www.a4h-tech.com/media/wysiwyg/DPD-Logo.png)
Nippon Racing Pistons are made using 2618 alloy and a proprietary centrifugal spin casting process.Â
As well as a 6 step heat treatment process to insure a piston as hard as many forged pistons, but with a mush lower expansion rate.Â
Meaning that they will out preform OEM pistons by as much as 300% with prolonged engine life.
40 Percent stronger than OEM Honda cast pistons.
Wrist pin center to dome height has been matched to within .001"
Dome displacement has been matched to within .005 CC
This results in near identical cylinder compression, yielding more horsepower and better efficiency.Â
All Nippon Racing Pistons set are weight matched to +/- 1 grams. Nippon Pistons also have deeper valve pockets than traditional Honda P73 pistons to a allow aftermarket camshafts up to Stage 3. These are true high performance pistons with a horsepower rate of 600HP.