Welcome to Underbone Tuner

Underbone tuner is a free online magazine for Underbones, Scooters, Backbones and occasionally we might squeeze in a big bike or two . We have been covering small motorcycles modifying culture for over 8 years already and still counting. We have the latest updates/news on motorcycle racing events from all over the country such as circuit, motocross, flat track, endurance, trail and supermoto. We cover motorshows from all over the country. We cover the latest bike launches and the latest trends in bike modifying culture.

But at the core of Underbone Tuner is the bike modifying / customizing culture. We scour the country for the best motorcycle builders/modifiers. We feature the owners of these amazing bikes and the talented teams and individuals behind these bikes. We give you the story behind those builds and hopefully we inspire others to keep this fascinating culture alive.

This website is dedicated to all motorcycle enthusiasts, this our life, this is our passion, this is who we are. We may be riding different bikes but we share the same fascination and love for motorcycles. We are all brothers in two wheels.

Tuesday, May 10, 2011

Yamaha MX 135 : Official Philippine launch May 15, 2011

Brace yourselves because the Yamaha MX 135 will be hitting
our shores this month as it will be formally launched in our
country this coming May 15, 2011 at SM by the Bay (MOA).

Engine type Liquid-cooled 4-stroke ,SOHC, 4-valve
Cylinders Single cylinder
Displacement 134.4 cm3
Bore × stroke 54.0 × 58.7mm
Compression ratio 10.9:1
Max. output 9.21 kW/8500r/min
Max. torque 12.14 N.m/5500 r/min
Starter Electric starter and kick starter
Lubrication Wet sump
Engine oil capacity 1.15 L
Fuel tank volume 4.0 L
Carburetion Mikuni BS25-58*1
Ignition DC C.D.I.

The Yamaha MX 135 has a set of new features including rear disc brake as a
standard, 5-speed transmission and new radical body design.

Another noteable feature is the usage of wide front and rear rims that
is 2.00 x 17″ for front wheel and 2.50 x 17″ for rear wheel. Wider tyres
provide a plusher ride and better handling with great improvement on cornering.
The rear wheel also sports new features like the chain tensioner of
the Yamaha FZ-150i (Vixion). It also has a 25mm carburetor compared to the
Sniper 135 which is only 22mm.

Power figures are up to (12,52 Ps @ 8.500 rpm) and (1,24 kgf.m torque @ 6.000 rpm )
for the new Yamaha MX compared to the previous Sniper 135 ranging only at
(11.49ps/8500rpm) and (1.19 kgf.m torque @ 6.000rpm).

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