Already have a full exhaust on your bike? You can still save $40 on our Norton Superbike Velocity Stack setup paired with our custom tuned Norton Race Spec ECU flash!
By far the best power and performance bang-for-the-buck upgrade for your Yamaha R3 / MT-03 is to install a top performing exhaust with our Velocity Stack setup and our Race Spec ECU Flash. Add 6-7 horsepower to your Yamaha R3 compared to stock!
*We recommend installing a block off plate at the same time as flashing the ECU or you will get some backfiring from the exhaust.
Full Exhaust, Norton Velocity Stack and ECU Flash Package Deal – Yamaha R3 / MT-03
From: $1,281.04$1,201.04
FREE SHIPPING on this item!
Already have a full exhaust on your bike? You can still save $40 on our Norton Superbike Velocity Stack setup paired with our custom tuned Norton Race Spec ECU flash!
By far the best power and performance bang-for-the-buck upgrade for your Yamaha R3 / MT-03 is to install a top performing exhaust with our Velocity Stack setup and our Race Spec ECU Flash. Add 6-7 horsepower to your Yamaha R3 compared to stock!
*We recommend installing a block off plate at the same time as flashing the ECU or you will get some backfiring from the exhaust.
***The Yamaha R3 typically requires a 142 or 144 link 415 chain! This EK 120 link chain is not long enough and 2 chains must be pieced together to get the correct length for the Yamaha R3.
*Note, you will need (2) master links to piece 2 chains together, so make sure you have enough master links. IE. If you purchase (5) 120 link chains, you will need 3 additional master links to assemble (4) 144 link chains.
OZ Racing, BST, and most Marchesini aftermarket wheels use a different bolt pattern from OEM for rear sprockets. 5 bolts, 10.5mm diameter, on a 100mm bolt circle with 76mm center hub diameter. Use these sprockets instead.
*(Marchesini wheels for Yamaha R3 use OEM sprockets)
*These sprockets are special order only, no returns.
OZ Racing, BST, and most Marchesini aftermarket wheels use a different bolt pattern from OEM for rear sprockets. 5 bolts, 10.5mm diameter, on a 100mm bolt circle with 76mm center hub diameter. Use these sprockets instead.
*(Marchesini wheels for Yamaha R3 use OEM sprockets)
*These sprockets are special order only, no returns.
OZ Racing, BST, and most Marchesini aftermarket wheels use a different bolt pattern from OEM for rear sprockets. 5 bolts, 10.5mm diameter, on a 100mm bolt circle with 76mm center hub diameter. Use these sprockets instead.
*(Marchesini wheels for Yamaha R3 use OEM sprockets)
*These sprockets are special order only, no returns.
*Transmission undercutting is a service to modify your OEM transmission. You must remove your transmission and ship it to us for undercutting service. We will inspect all gears upon dis-assembly and let you know if any gears should be replaced before undercutting. New spring clips may be required for re-assembly.
If you want to maximize the performance of your R3 without breaking the bank and the hassle of tuning, this is it. Please read these two articles to really see the power of the aRacer ECUs:
Norton Racing Over-Bored Throttle Body – Yamaha R3 / MT-03
From: $495.00
FREE SHIPPING on this item!
Once you place your order, we will contact you with information about sending in your OEM throttle body for core credit.
***When you send in your throttle body, please send it in just like the picture, except also remove the small black rubber grommets from where the injects mount. Please include your throttle cable mount.
Norton Racing Superbike Ported Head Kit (50hp) – Yamaha R3
From: $2,742.27
*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:
*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.
