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im south to mate :wink: once me and my mate get our rides up and running should catch up for some racing madness :twisted:
 
No-Fear said:
there are 3 diff types to choose from:
90cc e-start
110 e-start
125cc kick
check this site for info on all 3bikes
http://www.thumpstar.com.au/bikes.htm

things i have done to make the thumpstar bullet proof.
Red Baron Mini MX Bars - New light weight Red Baron handle bars, great first upgrade

Grips RXT MX - The stock grips wore down quick, and were loose on the
bars. New ones are non slide and more comfy for hands

Chain EK 420 Gold Race Chain - had to replace the thin chinese chain, before it snapped.

New Gear Box - whole new gear box free of charge from my dealer & Thumpstar. Gear box shft drum replacement - engine removed, disassembled parts fitted and reassemble. Gears are now 4up

Manifold - Manifold cleaned through out & removed burs, plastic spacer between carby and manifold also removed for greater throttle response.
(own mod)

Replace some chinese bolts - replaced some bolts on bike with stainless steel rust proof hex key bolts.

Peg Mount - remove foot peg mounts, retaper with heli coil thread for greater strenth

06 model thumpstar rear shock - new thumpstar 06 model shock to replace the loose rear end shock.

Front fork springs - replace front fork springs with stiffer ones, and new oil

12" rear rim + tyre - 12" red rear rim, tyre millville 80/100-12-rear, tube 275x300x80 & rim lock

new front tyre - new 12" moto x bridgstone front tyre

New Gear Box - whole new gear box free of charge from my dealer & Thumpstar. Gear box shft drum replacement - engine removed, disassembled parts fitted and reassemble. Gears are now 4up

fort the gears are 4up anyway ?
 
thats an old thread come back from the dead...
 
nope, on the old gear box they were 1d3up like other engines, the new gearbox replacement changes this to 4up. much better gear box, no miss hits.
boom said:
New Gear Box - whole new gear box free of charge from my dealer & Thumpstar. Gear box shft drum replacement - engine removed, disassembled parts fitted and reassemble. Gears are now 4up

fort the gears are 4up anyway ?
 
No-Fear said:
nope, on the old gear box they were 1d4up like other engines, the new gearbox replacement changes this to 4up. much better gear box, no miss hits.


1 down 3 up u mean?

how much did it cost ya for 4 up?
 
john_madeley said:
1 down 3 up u mean?

how much did it cost ya for 4 up?
yeah sorry 1d3up.

No-Fear said:
New Gear Box - whole new gear box free of charge from my dealer & Thumpstar. Gear box shft drum replacement - engine removed, disassembled parts fitted and reassemble. Gears are now 4up

1st one is a free upgrade from Thumpstar.
my mate has just had his 2nd gearbox done, this time it wasnt free coz he blew 2nd gear. Total bill was $700.
 

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