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Norton Racing Superbike Ported Head Kit (50hp) – Yamaha R3

From: $1,842.27

*Additional shipping charges apply to this item.

You must send us your OEM core cylinder head, throttle body, camshafts, and fuel pump to be modified or exchanged. Once you place your order, we’ll contact you with shipping information to send in your parts.

*Contact us first if you have a 2018 or newer international model bike.

*You will have to modify your OEM airbox to use this kit.  See pictures of modified airbox to the left.

We recommend using the Graves Motorsports Works 2 full exhaust with this kit, but you will see similar significant gains with any high quality, full length, full system exhaust that uses a restrictor baffle in the end.

In order to maximize performance and reliability of this kit, we only recommend tuning this kit with the aRacer Super RC2 using our parameters.

Here’s the before and after comparison dyno graph on a 2017 Yamaha R3, keep in mind, this is all done with 91 pump gas, and if you want to run high performance race fuel, you could easily get another 2hp from this kit:

Yamaha R3 Superbike Dyno Norton Motorsports Ported Head Kit Graves aRacer Super RC2 ECU

*If you would like to run this Superbike kit with high performance race fuel, we recommend installing CP Carrillo connecting rods for added strength to ensure the longevity of your motor.

Additional information

Weight 15 lbs
Dimensions 15 × 20 × 20 in

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