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2010 GT Power Series Ultrabox 2

#1 2020-09-04 8:31am

MickRich393
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2010 GT Power Series Ultrabox 2

https://bmxmuseum.com//image/GT-06.jpg https://bmxmuseum.com//image/GT-01.jpg https://bmxmuseum.com//image/GT-02.jpg https://bmxmuseum.com//image/GT-03.jpg https://bmxmuseum.com//image/GT-05.jpg https://bmxmuseum.com//image/cranks_copy17.jpg https://bmxmuseum.com//image/Rotor-3DF.jpg https://bmxmuseum.com//image/Rubena-Speedo-LT.jpg

2010 GT Power Series Ultrabox 2

Opinion-dividing if not iconic, carbon racer!

Love it or hate it, the Ultrabox 2 certainly has a distinctive look. This one’s an interesting bike for sure. Based on a 2010 frame, the third and final year of UB2 production, it has a real mixed bag of components. It came with a padded touring seat and assorted accessories (cyclocomputer, drinks-holder, lights and lock - all quickly removed) but also some decent race parts, some road cranks and some mtb parts! Judging by the marks on everything, the bike has been well-used, presumably on the race track, at least in the early years of its life. It then passed hands and out of the race scene, where it was used for cruising around on until the last owner decided to sell it. Which is where I stepped in!
Current plans are to break the bike down, clean it all up then take it to the track. If it’s too short and/or stiff for my liking, then I may have to have a re-think but if not, I can start to decide what parts to keep and what to swap out. Some of the mtb stuff will probably stay on there but I’m really not sure about that Rotor crankset or the Chromag bashguard! On the plus side, they’re certainly something you don’t see everyday, which I guess is in keeping with the frame! In any case, I love it! Here's a run-down of the parts, which I’ll update as I go along. Enjoy!
Frame: 2010 GT Power Series Ultrabox 2 monocoque carbon fibre race frame (21" tt with Ultrabox XL geo);
Fork: Elevn Technologies 8.0 Pro, chromoly (now Answer Dagger Pro, carbon);
Headset: PRO Bikegear RS-11, semi-integrated, threadless (made by Cane Creek);
Spacers: KCNC and Promax;
Stem: Elevn Technologies (50mm);
Handlebars: Renthal Moto 20XL (29" width x 8.25" rise, 638g);
Grips: Chromag Basis (now Tioga lock-on);
Brake lever: Shimano XTR;
Brake caliper: Shimano XT Deore;
Brake cable: Shimano;
Seat: Tioga D-Spyder (railed);
Seatpost: Pro Bikegear LT (31.6mm with 20mm offset) now Profile Design 03 carbon (cut-down);
Cranks: Rotor 3DF 3-piece (with 175mm arms);
Bottom Bracket: Rotor BSA30;
Chainring: Profile Elite (43T) with Chromag bashguard (now a 44T Renthal SR4);
Pedals: Chromag Contact, alloy (now DMR V12, magnesium);
Chain: Izumi (now a KMC Z610HX);
Rims: Sunn Envy (20" x 1.75" x 36H);
Hubs: Profile Elite (with 16T cog);
Tyres: Rubena Speedo LT 47-406 Elite (Now Maxxis DTH 20” x 1.75");
Weight: 8.23kg/18.14lbs (as at 06/12/20).


http://bmxmuseum.com/img/view-bike-in-museum.gif

Last edited by MickRich393 (2020-11-21 1:58pm)


Check out my 1983 VDC-built Trident, 1983 Kuwi Laserlite, 2010 GT Ultrabox 2, 2011 Crupi race rig and prototype Quamen, plus the all things Crupi & old school scene in Japan threads. Always interested in buying used, mid-school race plates.

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#2 2020-09-04 9:33am

NOSTALGIA007
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Re: 2010 GT Power Series Ultrabox 2

SpaceShip bro!!


For all the Homies that never got a chance to hook up their ride ....

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#3 2020-09-04 10:12am

Staats
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Re: 2010 GT Power Series Ultrabox 2

Sleek.

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#4 2020-09-04 12:36pm

OTHBMXR
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Re: 2010 GT Power Series Ultrabox 2

That thing is sweet!!!! I can't wait to see what you do with it! cool

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#5 2020-09-04 1:37pm

Ianwood112184
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Re: 2010 GT Power Series Ultrabox 2

Love these bikes been looking for 3.5 yrs now hopefully someday I can find one this one is dope


Iso Profile X File Frame

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#6 2020-09-04 4:05pm

version7075
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Re: 2010 GT Power Series Ultrabox 2

Cool pick up Mick!

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#7 2020-09-04 7:15pm

AJ Macaroo
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Re: 2010 GT Power Series Ultrabox 2

Hell Yeah! cool


Honorary O.G. “Cool Club” Member

It’s a goddamn absolute shame what this once magical place has turned into the last few months.

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#8 2020-09-04 7:37pm

turdburd
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Re: 2010 GT Power Series Ultrabox 2

Pretty cool that you could pick this up.


ABA Ca-13 1982-84  #926 #547 #123
RIP Matt C 4/09/97-12/22/20

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#9 2020-09-04 8:20pm

MickRich393
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Re: 2010 GT Power Series Ultrabox 2

Thanks guys! Took the bike out for another spin this morning and am loving how it looks:-

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/gt-075f5303290b.jpg

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/gt-085f53033d43.jpg

Have also updated the description with an initial parts list, though anticipate things are going to change fairly soon, starting with the cut-down carbon seat post that I bought online last night! By the time that arrives, hopefully I will have removed those decals (the non-og Smith and Mitas ones) and cleaned things up a little. smile

Last edited by MickRich393 (2020-09-04 8:21pm)


Check out my 1983 VDC-built Trident, 1983 Kuwi Laserlite, 2010 GT Ultrabox 2, 2011 Crupi race rig and prototype Quamen, plus the all things Crupi & old school scene in Japan threads. Always interested in buying used, mid-school race plates.

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#10 2020-09-09 9:45pm

MickRich393
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Re: 2010 GT Power Series Ultrabox 2

Decals removed and cut-down carbon post now installed! cool

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/gt-115f59af3c93.jpg


Check out my 1983 VDC-built Trident, 1983 Kuwi Laserlite, 2010 GT Ultrabox 2, 2011 Crupi race rig and prototype Quamen, plus the all things Crupi & old school scene in Japan threads. Always interested in buying used, mid-school race plates.

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#11 2020-09-17 5:52am

MickRich393
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Re: 2010 GT Power Series Ultrabox 2

Chromag bashguard removed and nickle-plated Profile Elite chainring revealed. cool

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/gt-135f635cb71e.jpg

Last edited by MickRich393 (2020-09-17 5:55am)


Check out my 1983 VDC-built Trident, 1983 Kuwi Laserlite, 2010 GT Ultrabox 2, 2011 Crupi race rig and prototype Quamen, plus the all things Crupi & old school scene in Japan threads. Always interested in buying used, mid-school race plates.

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#12 2020-09-24 5:46am

MickRich393
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Re: 2010 GT Power Series Ultrabox 2

Gave the UB2 it's track debut (with its new owner) on Tuesday:-

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/joetsu-25f6c950c9e.jpg

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/joetsu-45f6b417f76.jpg


Check out my 1983 VDC-built Trident, 1983 Kuwi Laserlite, 2010 GT Ultrabox 2, 2011 Crupi race rig and prototype Quamen, plus the all things Crupi & old school scene in Japan threads. Always interested in buying used, mid-school race plates.

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#13 2020-09-29 4:07am

MickRich393
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Re: 2010 GT Power Series Ultrabox 2

Went to another track on Sunday and am starting to get much more of a feel for the bike. The bottom line - I love it, which means that it's time to start swapping out some parts. big_smile

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/gonzo-25f71df30c3.jpg


Check out my 1983 VDC-built Trident, 1983 Kuwi Laserlite, 2010 GT Ultrabox 2, 2011 Crupi race rig and prototype Quamen, plus the all things Crupi & old school scene in Japan threads. Always interested in buying used, mid-school race plates.

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#14 2020-09-29 9:05am

NOSTALGIA007
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Re: 2010 GT Power Series Ultrabox 2

Very cool action shots!!


For all the Homies that never got a chance to hook up their ride ....

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#15 2020-10-16 9:52pm

Mr Redline
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Re: 2010 GT Power Series Ultrabox 2

Is that funky middle section where the motor is hidden mate?


YouTube channel documenting from day one, my return to BMX after 35 years away:
https://www.youtube.com/channel/UC1GBQx … DBkGX4GwOQ

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#16 2020-10-16 11:02pm

MickRich393
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Re: 2010 GT Power Series Ultrabox 2

If so, it’s down on horsepower!! lol I could do with a stage 1 tune like on your RS! Make that a stage 3, then I might have a chance of keeping up with you! tongue


Check out my 1983 VDC-built Trident, 1983 Kuwi Laserlite, 2010 GT Ultrabox 2, 2011 Crupi race rig and prototype Quamen, plus the all things Crupi & old school scene in Japan threads. Always interested in buying used, mid-school race plates.

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#17 2020-11-08 1:24am

MickRich393
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Re: 2010 GT Power Series Ultrabox 2

Have made a few changes. Firstly, I've swapped out the grey Chromag grips for some blue Tioga lock-ons. Just because! big_smile

More importantly, I bought a new KMC Z610HX chain and fitted the 44T Renthal SR4 chainring that was on my Quamen race rig (and was formally on my Crupi). The result is a smoother drivetrain and a more familiar 44/16 gear ratio. I also think it looks much better! Here are a few pics from today's test ride:-

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/img_34705fa7b5dab0.jpg

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/img_34715fa7b5fa90.jpg

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/img_34735fa7b91daa.jpg


Check out my 1983 VDC-built Trident, 1983 Kuwi Laserlite, 2010 GT Ultrabox 2, 2011 Crupi race rig and prototype Quamen, plus the all things Crupi & old school scene in Japan threads. Always interested in buying used, mid-school race plates.

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#18 2020-11-14 2:52am

MickRich393
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Re: 2010 GT Power Series Ultrabox 2

Weighed the bike for the first time today and with the cut-down, carbon post and Tioga seat, it came in at 8.34kg/18.39lbs, which was quite respectable, I thought. If I switch out the Elevn forks and Chromag pedals for the Answer Daggers and DMR V12s on my Crupi , I reckon it'll be nearer the 18lbs mark. If I really went for it and started down the ti bolt road then it may even get down into the 17s but that would involve spending (more) money, which I'm reluctant to do, so I will probably just swap the forks and pedals and leave it at that. Maybe!! big_smile

Am off for another track visit tomorrow to give the new chainring set-up a go. Here are a few pics from today's shakedown ride:-

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/img_34965fafb6a34f.jpg

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/img_35025fafb6b7c7.jpg

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/img_35075fafb6cb2a.jpg


Check out my 1983 VDC-built Trident, 1983 Kuwi Laserlite, 2010 GT Ultrabox 2, 2011 Crupi race rig and prototype Quamen, plus the all things Crupi & old school scene in Japan threads. Always interested in buying used, mid-school race plates.

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#19 2020-11-16 4:23am

MickRich393
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Re: 2010 GT Power Series Ultrabox 2

Sunday's track test confirmed that I really like how this bike rides!! smile

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/gonzo-65fb26f1dae.jpg

Time to switch out those 4130 Elevn forks for the carbon Daggers! cool


Check out my 1983 VDC-built Trident, 1983 Kuwi Laserlite, 2010 GT Ultrabox 2, 2011 Crupi race rig and prototype Quamen, plus the all things Crupi & old school scene in Japan threads. Always interested in buying used, mid-school race plates.

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#20 2020-11-21 4:37am

MickRich393
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Re: 2010 GT Power Series Ultrabox 2

Forks now switched! cool

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/forks-25fb909573d.jpg

I think the chunkier Daggers suit the frame much better than the slimmer Elevns, helping to balance out that big slab of carbon! They also came in at 220g lighter too. smile

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/img_35565fb90b0dc3.jpg

Last edited by MickRich393 (2020-11-23 6:33pm)


Check out my 1983 VDC-built Trident, 1983 Kuwi Laserlite, 2010 GT Ultrabox 2, 2011 Crupi race rig and prototype Quamen, plus the all things Crupi & old school scene in Japan threads. Always interested in buying used, mid-school race plates.

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#21 2020-11-23 6:41pm

MickRich393
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Re: 2010 GT Power Series Ultrabox 2

Back on track yesterday for a shakedown test with the new forks. Unsurprisingly, the front end felt lighter and was noticeably easier to lift up, as per the pic below.

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/gonzo-85fbbadde26.jpg

Now I need to borrow my neighbour’s scales again because with the addition of the Daggers and magnesium DMR V12 pedals, I reckon the bike should now be around the 18lbs mark. smile cool


Check out my 1983 VDC-built Trident, 1983 Kuwi Laserlite, 2010 GT Ultrabox 2, 2011 Crupi race rig and prototype Quamen, plus the all things Crupi & old school scene in Japan threads. Always interested in buying used, mid-school race plates.

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#22 2020-11-25 1:06am

Mr Redline
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Re: 2010 GT Power Series Ultrabox 2

MickRich393 wrote:

Sunday's track test confirmed that I really like how this bike rides!! smile

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/gonzo-65fb26f1dae.jpg

Time to switch out those 4130 Elevn forks for the carbon Daggers! cool

Smexy photo mate cool 






or playing pocket Billiards?


How exactly are you liking over the Crupi? I can't imagine geometry being much different. Or is it?

Last edited by Mr Redline (2020-11-25 1:07am)


YouTube channel documenting from day one, my return to BMX after 35 years away:
https://www.youtube.com/channel/UC1GBQx … DBkGX4GwOQ

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#23 2020-11-25 3:25am

MickRich393
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Re: 2010 GT Power Series Ultrabox 2

Nothing wrong with a bit of start hill pocket billiards! big_smile

Although it has a shorter top tube (if you can call it that) than the Crupi by half an inch, the GT feels equally as roomy and is an easy bike to ride. By that I mean that I liked it and felt comfortable on it as soon as I rode it, both on and off the track. The back end definitely feels lighter than the Crupi, though whether that's due to the geo or the carbon, I'm not sure. Swapping the forks over has made it even more chuckable, not that I get anywhere near as much air as you. I'm enjoying the parts-swapping and testing process though, and am looking forward to actually racing it, as and when that may be. Now if I can just find some DTH tyres for it... wink


Check out my 1983 VDC-built Trident, 1983 Kuwi Laserlite, 2010 GT Ultrabox 2, 2011 Crupi race rig and prototype Quamen, plus the all things Crupi & old school scene in Japan threads. Always interested in buying used, mid-school race plates.

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#24 2020-12-07 2:19am

MickRich393
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Re: 2010 GT Power Series Ultrabox 2

DTH tyres now sourced from Mr Redline - thanks mate! smile

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/maxxis-dth5fcddacf7e.jpg

These are my favourite race tyres, which are getting harder to find since Maxxis brought out the Torch. Like the UB2, the DTH was designed for the Beijing Olympics and although tyre technology has moved on, so has carbon frame design, so I think the two are well-matched.

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/maxxis-35fcddae332.jpg

The Rubena Speedos that were on the bike are actually slighter lighter than the 345g DTH. There were two versions of the Speedo LT, an economy version weighing 580g and an Elite version made from a more expensive but lighter carbon/rubber compound. The ones on the bike weigh about 330g, which is the quoted weight of the Elites. I quite like them but since most of the tracks I run at are dirt, some still with dirt berms, I prefer the extra tread of the DTH. Plus they have a slighter lower profile than the Speedos, which I think gives the bike an even sleeker look.

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/gt-165fcdffcc5a.jpg

When swapping over the tyres I had a look at the tubes and these are made by Onza, yet another new-to-me brand. They looked in good condition but are a 1.75-2.20” size, so I’ll keep them on for the time being but will replace them with a newer, smaller set down the line.

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/onza-tubes5fccb03b44.jpg

Another small job now done was to find some replacement bolts for the built-in chain tensioners, one of which were missing. Apparently a 40mm, M4, fully-threaded, allen head bolt is not a commonly-used item in Japan, so I sourced some from eBay instead.

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/chain-tensioner-25fce002596.jpg

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/tensioner-bolts5fce006b6f.jpg

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/chain-tensioner-45fcecfe4c9.jpg

That’s about it for the moment, apart from picking up this jersey:-

https://s3.amazonaws.com/uploads.bmxmuseum.com/user-images/47558/nutter-butter-35fcdde0e7e.jpg

Not BMX-specific but I thought the colours matched the bike quite well, and the price was right. cool

Last edited by MickRich393 (2020-12-07 4:59pm)


Check out my 1983 VDC-built Trident, 1983 Kuwi Laserlite, 2010 GT Ultrabox 2, 2011 Crupi race rig and prototype Quamen, plus the all things Crupi & old school scene in Japan threads. Always interested in buying used, mid-school race plates.

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