ASH Motorcycles Triumph Street Tracker
On display at the Bike Shed, Shoreditch.
Build video coming soon..
Front to back:
19” Excel rims with Tallon hubs and Maxxis CD5 tires.
Yamaha R6 forks re-sprung & valved, re-anodised silver + stanchions re-chromed by Maxton.
Yamaha R6 front brake with Earls braided brake lines.
Custom made front mudguard.
Manually machined yokes out of built aluminum.
Custom made risers with BAAK handle bars.
Custom made bracket anodised black to fit Motogadget Mini Speedo.
Harley Davidson front headlight.
Norman Hyde extended throttle, break and clutch cables.
Hand made aluminum tank with external fuel pump under the seat, Earls braided fuel lines, fixtures and fittingings + inline Earls fuel filter.
Shortened and reinforced lower frame rails transforming the look of the frame maintaining structural rigidity and strength.
Custom stainless exhaust system with removable baffle.
Twin Power Stage 2 engine re-map, air filters, AIS removal + air Box removal.
Engine covers cerakoted graphite grey.
Custom machined sprocket and heel covers.
Custom made aluminium quick release numberboards.
Custom made fiberglass seat unit with Saddleman seat.
Custom made rear subframe, tail tidy and number plate holder.
Motogadget rear indicators with custom hangers.
Öhlins TR 627 rear suspension.
Paint work by James King.
Starting off with a very clean Triumph Thruxton 900 EFI with 4.5k miles on the clock, the challenge to make something interesting out of the Thruxton began by taking inspiration from flat track racing; the style, ergonomics and stance informed the initial concept to make a street going bike with attitude. The aim of ASH Motorcycles is to make as much ‘in-house’ as possible, as the following will explain.
Starting at the front end, Yamaha R6 forks re-sprung & valved, anodised silver and stanchions re-chromed by Maxton, have been made to fit via a set of manually machined yokes – perhaps the most time consuming part of the build, starting with two blocks of billet aluminium and no CNC machine in sight! The yokes are one of the most understated parts made for this bike, and anyone that has manually machined billet aluminium will appreciate why it’s one of the most impressive parts of this build. Combined with a set of risers to mount the BAAK bars, a mounting point for a small HD Sportster headlight that sits horizontal off the top yoke and a front mudguard made in-house.
Moving on to one of the most important parts of any custom build – the tank. Taking inspiration from Trackmaster tanks of old, it was crucial to get the silhouette and lines just right in order to call it a true flat tracker, but still able to hold a decent amount of fuel for everyday use. Again made in-house and calling upon local English wheel legend Richard Marsh to help, a wooden buck was made used as a reference point and work began wheeling and shaping. The bead down the centre adding strength combined with a Monza fuel cap gives a nod to the old school, which is what this bike is all about.
Continuing the lines of the tank and into the seat unit, a bespoke fiberglass unit was made with the help from a local firm Ace Fiberglass. The seat pad is from US company Saddlemen, which completes the flat tracker look and sits on a custom rear subframe with rear light tucked neatly underneath. The underside of the seat unit acts as both a mudguard and fills in the rear end.
The two into one exhaust is made from stainless steel and TIG welded wrapping neatly around the engine collecting into a reverse cone with an inset tailpiece. It’s loud and throaty and complements the lines of the bike in a truly unique way. The frame has had a minor tweak getting rid of the under cradle, using the engine as a stressed member, which transforms the look for a more aggressive stance. To complete the flat tracker look, 2 quick release number boards made out of aluminum sit either side of the bike.
Smaller details include the speedo mount fixed directly to the handlebars to locate the Motogadget speedometer. Neat little rear indicator brackets were made to fix Motogadget indicators from the rear suspension mounting points. Machined aluminium heel and sprocket covers complement the engine fins, and the engine side cases were finished in a grey composite cerakote in a conscious effort to avoid painting everything black.
Upgraded items include Ohlins rear suspension, 19” Excell rims laced to Talon hubs and fitted with Maxxis flat tracker tyres, a gold DID chain, Twin Power Stage-2 air box elimination and ECU Map. The rear brake remains standard, whilst the front brake is Yamaha matching the R6 front end.
In order to run a smaller tank on this fuel-injected bike an external fuel pump was required and housed under the seat unit. Earls Performance braided lines, fixtures and fittings were used with a pressure regulator mounted visibly.
The stunning paintwork by James King is a continuation of the modern / vintage feel theme and really finishes the bike off. Parts of the handmade tank were left bare aluminium, framed by a candy red pin stripe. The contrast deep graphite grey with a very subtle metal flake and old school Triumph logo really sing in the sunlight – as does the ASH Motorcycle logo that sits proudly on the seat unit to complete the look!
This bike was shown at the Bike Shed 2022 show, included in the BikeExif exhibition at the Malle Mile the same year and published on the BikeExif website which you can read here:
https://www.bikeexif.com/triumph-thruxton-street-tracker
You can also look at various stages of the build on the @ashmotorcycles instagram page.
The bike has done around 100 shake down miles since it was built, the engine has 4.5k miles on the clock with valve clearance check, fresh oil, oil filter and air filters. MOT till July 2027.
Give me a call to arrange a viewing at the Bike Shed.