XMD333 WIDE+ / 27.5-650B (350 g)

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  • 584/32 h Black Disk (350 g / Eyelets) --- 125,00 €
125,00 €
inkl. 19% Mwst.
105,04 € Netto
Art-Nr. :
“XMD333 WIDE+ / 27.5-650B”
Ultra light WIDE+ Disc Rim for XC and XM
More inner width for a steeper carcass, more traction with less pressure
Eyelets allow for spoke tension up to 1150 Nm
Permitted tyre pressures from 26psi - 50psi
Tubeless-Ready: Suitable for both, tubes and tubeless systems
This B.O.R-Product is permitted for CrossCountry and CrossMarathon use ONLY! It has a rider weight limit of 90 kilos! This refers to the total weight of the rider including clothing, footwear and possibly backpack! (The weight of the bike is NOT included into the “maximum rider weight”!).
10 years of “Tubeless” and ultra-light Alloy Rims!

Developed even before the official launch of “B.O.R Germany” its founders manufactured Tubeless Sealant and Tubeless-Ready light weight rims. Beiing the winner in Europe’s biggest MTB magazin’s “Tubeless-Test” (“Bike” 10/2006) with our B.O.R Tubeless Kit the first step had been made!

In the last 9 years B.O.R rims won countless victories and podium finishes at Cape Epic, Transalp, Trans-Germany, world cups, 24h world championships, etc. and have been (beside Notubes rims) state of the art reference rims regarding low weight and Tubeless-Readyness. They have also found, specifically in the last 4-5 years, many followers (Ryde, American Classic or WTB), most of which, in contrast to B.O.R rims, come from Far East!

Our most prominent riders:
2-times and present “German Marathon Champion” Silke Schmidt
“German Vice-Champion” Max Friedrich
Multible “Swedish Champion” Jens Westergren
Currently most successful Portuguese biker Sonia Lopes
Present “Austrian U19 Champion” Felix Ritzinger
And among other teams like
Team MHW Cube
Team Black Tusk Racing
Team Zwillingscraft (Sandra Klose)
Podium finishes of the last 12 months (only 2014):
1# - Trans Zollernalb 2014 (Women’s) - Jana Zieschank
1# - Black Forest Bike Marathon 2014 (long distance) - Jana Zieschank
1# - German Championships MTB Marathon 2014 (Women’s) - Silke Schmidt
2# - German Championships MTB Marathon 2014 (Masters 1) - Max Friedrich
2# - Transalp 2014 (2erMixed) - Silke Schmidt, Sascha Schwindling
5# - Transalp 2014 (2erMixed) - Jana Zieschank, Max Friedrich
1# - Albstadt LBS Bike Marathon 2014 (Women’s) - Silke Schmidt
3# - Rothaus Hegau Bike Marathon 2014 (Women’s) - Silke Schmidt
1# - Hero MTB Himalaya 2014 (Women Solo) - Sónia Lopes
1# - Cape Pioneer Trek Bridge 2014 (2erMixed) - Jana Zieschank, Max Friedrich
RIM WEIGHT “XMD333 WIDE+ / 27.5-650B”:
355-360 grams anodised
Regular Tyres + Regular Tube
Regular Tyres + B.O.R-Tubeless-Kit or comp. Tubeless Kit
Tubeless-Ready-Tyres + B.O.R-Tubeless-Kit or comp. Tubeless Kit
Classical UST tyres + B.O.R-Tubeless-Kit or comp. Tubeless Kit
Competitor’s Tubeless Systems/Kits: Other tubeless manufacturer’s instructions must be observed!
Tyre Manufacturers: Other manufacturer’s instructions must be observed!
Permitted Tire Diameters: 1.75’’ bis 2.80 ‘’
1.75/1.8 : 2,0bar - 3,5bar (29psi - 50psi)
1.9/2.1 : 1,8bar - 3,2bar (26psi - 45psi)
2.25/2.40 : 1,6bar - 2,9bar (23psi - 42psi)
2.60/2.80 : 1,5bar - 2,7bar (21psi - 39psi)
Cross Country / Marathon
NOT All Mountain / Enduro / DH!
High pressure profiling (7.5 T)
Anodised or powder coated
Sleeve + Glued Connect
Hole numbers : 32
1.3 mm asymmetry
Rim Width: 27,8 mm
Inner Width: 24,3 mm
Rim Height: 17,0 mm
ERD: 569 mm
Diameter: 650B / 27.5’’ (584 mm)
ETRTO: 584-24
Double-crossed & Triple-crossed
1000-1200 Nm spoke tension
Blade Spokes and Butted Spokes
Aluminum and brass nipples (12-14 mm)
When hearing the word, “tubeless“ most people probably get the rough idea what it’s all about. Many know how to install the system, at least the one they’re using but are not always familiar with the differences between existing systems and components.
Physically, the main difference between “Tubeless Ready“ and “normal“ rims is that the distance between the bead hook (i.e. rim flange) and the rim bed (base) is narrowed without shortening the flange.
As a result on Tubeless-ready rims, each rubber stub (rubber bulge) surrounding the anchor bead generates a tightly fit seal between bead hook and rim base when the tyre is under pressure. That is why a tape (White Tape) is needed to close off the system between tire and base as well as the nipple holes. A sealant then closes up the last tiny gaps.
The big hype of using latex-based sealant happened between 2005 and 2010. During these early years, tubeless bikers tried to “lighten” their load by using MTB folding tyres and eliminating inner tubes. However, tyres then had a certain level of tolerance regarding the anchor bead. Skill and patience was required to get the system tight!
The problem was solved by compensating tolerances with added rubber around the anchor bead and lower carcass or even by minimally reducing the anchor bead diameter. This physical solution found many different names such as “Tubeless Ready,” “TL Easy” (Tubeless Easy), “TR” (Tubeless Ready), “SCT” (Sealant Compatible Tyre) and so on. With these enhancements, a latex-based tubeless system was relatively easy and worry-free, especially when using together with “Tubeless Ready” rims.
All tubeless systems are not equal. The ideology of MTB tubeless systems is based on the same principles as those used in automobile tyres: UST = Universal System Tubeless; a wheel in combination with a tyre of high rubber proportion is closed off at the rim base.
The disadvantages of UST rims are more wheel weight and an unconventional attachment of spokes and nipples. UST tyres are usually much heavier than their tubeless-ready or normal versions and still end up occasionally losing air, which is why many UST-Bikers still add sealant in their tyres!
The number of “pure” UST systems is diminishing because their lighter-weight latex-based Tubeless Ready rim and tyre rivals are replacing them.
Latex-based Tubeless Kits usually contain “rim tapes”, “sealants” and valves.
The success of B.O.R Tubeless Kits started by becoming the 2006 test winner in Europe’s most popular MTB magazine (“Bike”, 10/2006). Presently, there are around 8-10 slightly similar products existing worldwide.
The disadvantages of natural latex-based sealants are due to their natural water content; they lose their viscosity and sealant effects at lower temperatures and below freezing point even risk crystallisation.
Synthetic latex-based sealants can work at lower temperatures. However, these generally do not provide the same sealant properties as their natural counterpart.
With a latex-based tubeless system the following benefits can be achieved:

Puncture protection

Reduction of rolling resistance

Reduction in rolling resistance

Increase of traction, less tyre pressure needed


Make sure that the rim bed is cleansed and grease-free!

Start by using the White Tape, placing it 4-6 inches (10-15 cm) from the valve hole. Install the rim tape in the direction of the valve hole, covering it up first.

Continue applying the White Tape all around the rim bed, pulling at it with a light pressure. Using your fingertips, guide the tape to the middle of and rub it flat onto the rim bed. The White Tape must be free of air bubbles!

Once you have reached the valve hole again, continue taping for another 4-6 inches (10-15 cm) and cut it there. The White Tape should now have been installed all around the rim, covering the valve hole twice!

Having already used your fingers to rub the White Tape onto the middle of the rim bed, do the same for the edges of the rim tape under either side of the rim flanges. You may also use a clean and grease-free cloth to do this.

After having installed the tape, prick a small hole in the tape in the middle of the rim valve hole. Remove the knurled nut from a tubeless valve and transpierce the hole in the tape with the valve. Tightly screw the knurled nut onto the valve stem. The large square rubber bulge of the B.O.R. valve will keep the valve from slipping through the hole.

If you have little experience with tubeless systems or are using regular wire bead tyres, we recommend performing a trial WITHOUT sealant first. To do this; mount the tyre, remove the valve core from the valve stem and plug the valve stem into the compressor Presta inflator head. Removal of the valve core will allow more volume and a faster airflow. If the tyre has been mounted correctly, it should “pop” fairly quickly into its correct position along the rim flange! This trial can easily be used to check if the White Tape is leak-proof and has been installed correctly if little or no air escapes the tyre.

If you wish to skip or if you have successfully performed the trial, fill your tyre before mounting the second half onto the rim with 2.5-4 oz (70-120 ml) of latex sealant. Then carefully fit the second half of the tyre onto the rim. You may also simply mount the tyre, leaving a 10-20% gap on one side, fill the sealant inside the tyre through the gap and then fit the rest of tyre onto the rim.

When using “Tubeless-Ready” tyres you usually do not even need a compressor. A normal floor pump should work just fine.

Once you have mounted, sealed and inflated the tyre remove the compressor Presta inflator head and rapidly screw the valve core back into the valve stem. You may use your fingers to block the air from escaping through the sides of the valve core while screwing. If you are quick enough, you should only lose about a third of the air pressure in the tyre. This way, your tyre’s form will remain in its correct position. You may now pump the tyre to the desired pressure. Please make sure to respect the tyre and rim manufacturer’s min and max pressures!

Lastly, to make sure the sealant is dispersed regularly inside the tyre and miniature pores are clogged, swivel the wheel and beat both sides of the tyre on the floor all around. Small pores usually seal best using a pressure between 15-25 PSI (1.0-1.8 bar).