W40i Alu Rim

  • Outward-facing, massively enhanced rim flanges
  • Angle adapted spoke nipple fit
  • Intended usage: CC / Marathon, Downhill, Enduro, Gravel, Trail
  • Wheel diamter: 27.5” (584 ISO)
  • Rim material: Aluminum
  • Maul wide (mm): 40.0
  • Range of application: MTB
  • Tubeless ready: Yes
  • Numbers of holes: 28
  • Rim type: Syntace W40i Rim
  • Rim color: Black anodized
  • Max. system weight (kg): 130
  • ERD value: 558 mm
  • Weight (g): 585


Ready for shipping. Delivery time: 1-2 workdays

€120.00 *

Prices incl. VAT plus shipping costs

excl. shipping costs

The Pionier

A narrow rim in combination with a wide, heavy tire used to be common in the past. Today, however, wide rims can be combined with new, lightweight tires. Properly wide, high-quality rims, however, have always been heavy, too.
As the first company, Syntace broke this vicious circle in 2011 with the release of the original Syntace W35. After five years of experience, we have improved the rim with an even better, light alloy metal and a new rim profile that stood all of our test runs and
became another 50 g lighter than its predecessor.

Stronger than the spoke

Thanks to the SmoothFit profile, the spoke socket in the rim has become a lot more resistant against being ripped out. The socket is perfectly aligned with the actual spoke and nipple angle. This makes the entire construction more reliable than common rim bottoms or
solutions with nipple washers that even used to add extra weight to the rim but that did not reinforce it.


he V-shape design is coming directly from the initial founder of outward-bound and massively enhanced rim flanges on mountain bike wheels. The shape has been tested and approved in uncounted series of experience and now features grip grooves to generate ultimate tire interlinking. It is 25 % stiffer and boasts with the performance of of a rim that actually is 2 mm wider looking at the tire width and the adhesion 

A light hub with a heavy rim? No thanks!

The overall weight of a wheelsets tells you no more than one half of the story; the MOI is a lot more telling.

This is because it reflects how far the weight of the overall design is placed away from the hub and thus how much it slows you down.

Comparison with an the ­identical overall weight:

  1. Low inertia – the weight is ­close to the hub and does not constantly have to be accelerated.
  2. High inertia – the weight is ­closer to the rim and thus leads to a higher effort.

Real Weight Indication

That is because the value stated refers to the actual weight of the wheelset, as it is mounted. Further washers are not necessary.

10 Years (3+7) Warranty

When damage was caused by material- or manufacturing errors, we repair or replace your wheel or wheel component free of charge for up to 3 years, after that we only charge a 50% fixed rate of the current recommended retail price until the end of year 10 of the warranty. You can find more information here.



Sealing milk advice:

Using sealing milk that contains ammonia causes corrosion damage to your spoke nipples and rims. Make sure to use only ammonia-free sealing milk like e*thirteen Tire Plasma or Continental RevoSealant with your Syntace products.

Brochures, assembly instructions, manuals and spare parts

6.8 MB
C33i Straight Alu
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