This package has been specially developed for those who require the ultimate in air flow and fuelling from their Harley-Davidson M8 bikes. It includes our huge, 90mm, throttle body and our 5-axis CNC-machined 4 injector inlet manifold with four-injector fuel rail (injectors not included).
 
90mm throttle body
The huge, 90mm, throttle body is the perfect addition for anyone looking to increase the power of their 2017-on Harley-Davidson M8 Touring.
 
Each throttle body includes all new components including a CNC-machined billet 6061-T6 aluminium housing, with a precision-honed oversized bore; a responsive high-torque servo motor, and a proprietary Non-Contact Hall-Effect TPS sensor.
 
o Huge Increase in Airflow Over Stock Throttle Body
o Precision Honed Oversized 90mm Bore
o CNC-Machined Billet 6061-T6 Aluminium Body
o Aluminium Throttle Plate
o High-Torque Precision Servo Motor
o Thermal Gasket
 
Inlet Manifold & Fuel Rail
Developed to work with our 90mm throttle body, this 5-axis, CNC-machined inlet manifold is a work of art! It includes a four-injector fuel rail – two per cylinder – (not included). We have sourced an injector driver for the second bank of injectors, which means you can use the stock wiring harness and tune the second injectors to come in under high load. This retains great drivability under light load and when cruising. Harley’s RBW e-throttle can be retuned to give reduced opening, at light throttle angles, to increase airflow and engine efficiency.
 
Order your additional injector driver HERE