You'll tear your breeches!

[Midnitemo]

The biggest stumbling block with the motor is being 2 valve not 4 valve as regards tuning for more power , absolute performance would require more air to flow , one inlet valve isn't going to be ideal , looks like Enfield designed it to be a lugger rather than a charger from the get go , performance off road bikes of similar capacity make around 50 or so bhp but they are liquid cooled 4 and in yamaha's case 5 valve designs with massive throttle bodies . liquid cooling allows for tighter tolerances leading to higher compression , these machines are pure bred race bikes and not really much use to you , if it were mine i might try a slight upgrade on the ecu and perhaps an aftermarket muffler that's a bit lighter and less restrictive but that's as much as i think i'd do , perhaps aim for another 4 or 5 ponies......i am envious of the low down torque , my BM needs a fistfull of revs to pull away cleanly without stalling and it is finnicky about being in the right gear.