I have seen people on youtube ride their bikes in approx 187km/h (~116 mph). How fast can you drive with your bike?
I have not got my bike faster than 167 km/h (103.7 mph).. Well, I don't remember the weather conditions and I'm quite heavy (~98 kg, ~216 lbs) but how can the difference be so big?

I have open air filter (K&N), slipon, Kev O2 controller and a PowerJet to get more fuel.. I have default sprockets (15/45) as well.. Is it only possible to reach 187 km/h with other sprockets or do any reach those speeds with default sprockets?

Isn't my bike well "burned in" when it was new or why don't I reach higher speeds? It feels very responsive even in those speeds..

Well, I don't recall ever exceeding an indicated 95mph on mine and I don't intend trying to push the speed envelope any further either!

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119mph with no luggage, tucked in, slight downhill.

Not even tickling 6,500 RPM... ran out of road before I could find out if it went any faster.

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Bike: 2013 XT660Z, TKC70 tyres

Mods:
Barkbusters, Scottoiler, DIY Tail Mod, DNA Stage 3, Power Commander V & O2 Eliminator, Exan X-Black Stainless exhaust, Tool tube, Ohlins linear front fork springs, Nitron rear shock, JT front and Supersprox rear sprockets, D.I.D. VX 520 chain, Adventure Spec bashplate, DIY USB Outlet, DIY chain guide, Kev's Throttle mod

http://www.facebook.com/onemooseonemotorbike

112mph with me and tall screen on my modded x

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Yamaha xt660x 2009 blue/gold mods= iridium plug, stage1+2, removed snorkel, blocked ais, akrapovric pipes, power commander pc3usb (pre made map), adjusted tps, dynojet 02 optimiser 30amp aux relay, smoked puig screen, oxford heated grips and brembo carbon ceramic pads, rfx 30mm bar raisers, puig long adjustable leavers, plus much more and a cheep �30 alarm which stopped it been stolen

I have had my XTR with standard gearing 15/45 up to
170kmh passing a line of cars...

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Harley Davidson..
The easyest way to turn gasoline into noise with out the side efect of horse power...

I have been over 200kph on Chris's big bore 76hp XTX sitting up.

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Click here to join the XT Supporter's scheme

Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
[
My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946

Indicated 177 kph on my XTX with standard gearing, flat down on tank with 2km straight run up. If you wanna performance bike look elsewhere!!!!

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(Now sold on, sob) 2011 Blue XT660X with gold wheels, was 26,500 km.
Engine mods: K&N Stage 1 filter, DNA Stage 2 filter, snorkel removed, Kev fuel mod fitted.
Plus: smoked Puig screen, Yam aluminium sump guard, Yamaha / Acerbis handguards, Givi Trekker aluminium side cases, Leo Vince X3 cans plus Kev front fork mod and Fender Xtender. Just fitted Michelin Road Pilot 3 tyres.

SOLD the XTX for a Super Ten 1200. And just bought a Raptor 700 so staying on here for some tips....

Im not looking for a performance bike, I just had a question why I only reach 167 km/h when others can reach 187 km/h .. That is 20 km/h more, quite alot..

Maybe it is because of My weight... 98 kg..

Just a thought... You haven't got/had a Speedo-Healer fitted by a previous owner? Your top speed sounds about right if you assume the speedo is spot on and accurate. XT speedos tend to read about 10% fast. So 187kph on an optimistic speedo is going to be about the same as a 167kph on a "corrected one". In which case you're bike's speed is roughly the same as everyone else's!

Check it with a GPS...

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Yes, will check with gps..
Don't think a speedo healer is installed. It was also default kitted with 15/45, so no speedo healer was needed.. I don't think the drive line has ever been replaced. Only 10500 km (~6524 miles?) on the meter when I bought it.