The Yamaha FZ-09 product manager Shun Miyazawa and his team started from a blank slate with the new model, and they considered V-twins, parallel twins, triples, and fours. They settled on the triple configuration as the best all-rounder, the final engine has a capacity of 847cc, a compression ratio of 11.5:1, a bore x stroke of 78 mm × 59.1 mm, 115 hp at 10,000 rpm, and a 6-speed gearbox.
The build process started with a teardown to inspect the Yamaha’s frame – it was decided to build a new subframe to accommodate a new seat, to clean up the rear end of the bike significantly. All unnecessary body parts were discarded to reduce weight and clutter, but the original fuel tank was kept in place after the original paint had been removed and replaced with a clear coat.
In order to keep weight as low as possible the frame and swingarm are both cast aluminum alloy. Each is cast in two pieces, the two halves of the swingarm are then welded together, and the two halves of the frame are bolted together, using the engine as a stressed member.
The battery and electrical system found a new home up under the seat, out of the way of rain, mud, and debris. The original headlight was removed and swapped out for a tracker-style plate incorporating a small beak-fender, with 4 bright LED lights. The stock speedometer was relocated and a Droog Moto Bar was installed, with new grips.
The original wheels were removed and fitted with blacked-out aluminum inserts, then they were fitted with chunky Continental TKC80 tires. A custom 2” lift and updated oil pan were completed to aid in ground clearance when off-road, and a carbon M4 silencer with a re-worked exhaust system were installed, giving the bike a far more aggressive sound that the stock examples.
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#Yamaha #Moto #Bike #Scrambler #MT09 #Custom
