Upgrade the performance of your Harley-Davidson® Motorcycle from Exhaust, ECU Remap to Stage upgrades and more.
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We can carry out many performance upgrades to your motorcycle. If you want more power and sound, we offer a stage one tuning package which generally gives good increase in power and torque. This consists of a free flowing air cleaner, a free flowing exhaust system, and a remap of your motorcycle ECU. Many different options are available so please ask for details. or see below. We can supply and fit uprated transmissions from 4 to 5 speed to 7 speed, overdrive pulleys for relaxed cruising. Underdrive pulleys for acceleration, hydraulic clutch conversions, performance clutches, performance drive belts and chains, larger primary drivetrains with open belt systems, plus uprated starter motors to cope with large capacity engines and much more. If you would like to know more or would like some advice, get in touch.
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We have access to over a million products from our network of suppliers who include most of the big names in the Harley-Davidson aftermarket world such as: Motorcycle Storehouse, Parts Europe, Custom Chrome and Zodiac. We place orders weekly to Europe and the USA. We also carry fast moving stock on the shelf such as oil filters, brake pads, air filters, engine oils, inner tubes, spark plugs, bulbs etc. Get in touch with us today.
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Your Harley-Davidson Motorcycle stage upgrades, with Screamin' Eagle Performance by the specialist JWA Motorcycles .
For those riders who wish to push the bar we specialise in stage two and three upgrades which often involves the stage one package and then adds a performance camshaft and larger bore cylinders. We download, remap and tune in house and are able to extract that extra push of torque from your machine, whilst always maintaining reliability. See below for more information or get in touch with us.
INTAKE + EXHAUST + TUNING
Move more Air & Fuel
Foundation for all future stages
Performance tuning which involves removal of the original air filter and fitment of a new filter which allows more air to flow into the engine, along with removal of the original exhaust system and the fitment of a new exhaust system of your choice. The new exhaust gives better gas flow and a better sound for your enjoyment and the package is completed with a remap of your ECU to bring out the full performance benefit of the tuning.
S1 + CAMSHAFT UPGRADE
Give it a Lift
An add on package to the stage one tune which includes the fitment of a high lift camshaft and an ECU remap. This gives better performance and torque curves which allow effortless cruising and overtaking torque.
S II + BIG BORE CYLINDERS + PISTONS
pump up the volume
An add on package to the stage 2 tune which consists of larger cylinders and pistons along with an ECU remap. This increases the cubic capacity of the engine and gives even more performance and torque.
S III + CYLINDER HEADS + THROTTLE BODY
top it off
The ultimate package consisting of all previous stage upgrades, plus performance cylinder heads with larger valves and a larger bore throttle body with a final ECM upgrade. This is for the serious performance riders out there with massive increases in performance and torque.
Each stage upgrade is individually tailored to the make and model of your motorcycle taking into account any existing upgrades already present. We work with the customer to achieve the best outcome for their needs.
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Ultimate Perfomance
JWA Motorcycles brings you Don Perfomance
Ultimate perfomance
JWA Motorcycles brings you Don Perfomance
We are proud to announce our partnership with Don Perfomance of Germany.
The German Harley-Davidson expert plus JWA Motorcycles
More power, smoother running engine and maximum driving pleasure guaranteed.
Don performance are the leaders in performance upgrades for Harley-Davidson M8, Twin Cam, and Sportster motorcycles. More power, better throttle response, increased mpg and cooler running temperatures.
The advantages of Harley tuning with Don Perfomance delivered by us
With Harley-Davidson Tuning/Mapping, the values of the mixture and ignition situation are optimized directly in the engine control unit. The engine-friendly performance enhancement ensures a sustained, harmonious driving experience without annoying lean jerking. Even at low engine speeds, during acceleration and in intermediate sprints, the engine runs pleasantly, smoothly and with reduced engine temperature. The Harley tuning is particularly noticeable in the life of the engine: through the optimized mapping of the control program, this is significantly increased. However, if you are not satisfied with the result of the Harley tuning, we offer a 30-day money back guarantee.
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