Purpose Built Moto’s 250cc Yamaha Scrambler…
Introduced in the 1990s, the Yamaha TTR250 was an air-cooled 250cc trail / enduro bike designed to be rugged, reliable, and long-lasting. Not only did the bulletproof TTR excel on those fronts, it was a surprisingly capable single-track weapon:
“The Yamaha TTR250 is a hardy wee beastie. As an undemanding, unfussy enduro bike for newer riders it excels, with a never-say-die single cylinder motor that has just enough pep for muddy fun.” –MCN
Veteran enduro riders were even surprised at how fast and fun the unimposing 19-hp four-stroke proved to be:
“Once I had the momentum up the TTR was capable of maintaining a serious trail pace and again was doing it while continuing to provide the most comfortable of rides. I was blown away by how fast you can ride a TTR without any worrying moments. I was blown away by how much fun it was doing it too.” –Barry Ashenhurst
Our friend Tom Gilroy and the crew from Australia’s Purpose Built Moto picked up this ’99 TTR250 as a poorly executed scrambler project:
“The previous owner had stripped all the plastics off the bike and fitted up the ever popular CG125 tank, while the idea was there the execution was lacking with an ill fitting seat, flimsy tank mounts, some questionable fabrication work, and some even more questionable wiring.”
PBM continues to produce some of our favorite customs, including the Yamaha DT400 restomod we featured last year — one of our favorite builds of 2022 — so we were excited to see what they’d do with another enduro to scrambler conversion. Says Tom:
“There was potential lurking beneath the surface of this poorly built beach TTR250 scrambler, and we were about to let it out. “
Out back, they modified the frame to allow the installation of a new saddle, upholstered by Timeless Autotrim with thick foam, Alcantara sides, and a black gripper top. They retained the OEM airbox, meaning this bike can be ridden down dusty trails without fear, and fabbed up some aluminum side covers.
They spent a good bit of time making sure the CG tank was mounted properly with factory-style rubber mounts welded to the frame, and sent the rear shock out to Costanzo Racing for a rebuild and upgrade.
After rebuilding the forks, they realized the engine itself was in need of some TLC:
“If this bike’s childhood was anything like mine, this was likely a symptom of countless weekend barbeques on the farm with dad’s mates, and all your uncles doing time trials around the paddock.”
Fortunately, they’ve recently brought an engine builder / performance mechanic in-house, operating as Purpose Built Performance.
“The TTR was treated to a completely new top end, including new valves, springs and some porting work to get it breathing a little easier. We’ve also rebuilt the standard carb back to new condition.”
They fabricated and ceramic-coated a custom exhaust, capping it off with one of their torpedo mufflers, and the MX-style front fender is handmade. The stock hubs with laced to a set of 19/18″ Excel rims with Continental TKC80 tires.
The lighting and electrics were overhauled with 3 button PBM switches, which run to a Black Box module under the seat and control the 5.75” Flashpoint LED headlight and 3-in-1 indicators. For any Yamaha build, it’s hard to beat that iconic speed block pattern, and we love it here with the glossy silver paint.
Tom says this TTR scrambler might not be the fastest bike on the street, but it’s a hell of a lot of fun:
“The end result is a super light weight, well balanced bike, with enough power to get you where you need to go and loads of style to boot.”
Follow the Builder
I would scramble the hell out of this 👍