Schwalbe PROCORE Double Chamber Mountain Bike Tire System Now Shipping

by Brian Mullin on May 26, 2015


PROCORE Ride Progressive

Schwalbe has partnered with the component company Syntace to produce and design the PROCORE Dual-Chambered mountain bike tire system. This system consists of a main outer chamber that utilizes lower pressure (14+ psi) combined with an inner one that’s closer to the rim seat, which would use much higher pressure (55-85 psi). Offering better traction and control, a wider footprint, with no burping, pinch flatting and rim impacts.

It’s now finally shipping after being presented at last year’s Eurobike. I am looking forward to finally trying this system out since its functional characteristics in the rugged mountain biking world that I frequent should offer excellent real world benefits. The PROCORE kit (enough for two tires) retails for €195, adds about 200g per tire and is available in 26″, 27.5″ and 29″ sizes.

Press Release 

re-defines tire performance for mountain biking. Because now, the air
pressure in mountain bike tires can be controlled using dual chambers.
In the outer chamber the air pressure is extremely low (0.8-1.5 bar) –
ideal for maximum off road performance. In the inner chamber, directly
on the rim, there is high air pressure – even a very strong impact
cannot dent the rim edge. At the same time, the inner high-pressure
system secures the tire on the rim. “Burping”, the dreaded loss of air
at low pressure in conventional tubeless systems, is impossible.

is derived from “Progressive Core”. The core (internal high pressure
chamber) progressively absorbs even the hardest impacts. It is a joint development between SCHWALBE and SYNTACE.

PROCORE in action

The key advantages at a glance:

  • Tire pressure can be reduced to a minimum 0.8 bar, thus providing a huge amount of grip.
  • Even on the roughest terrain tires “stick” to the ground.
  • The tire provides extremely sensitive cushioning.
  • The extra cushioning and traction brings better steering, braking and traction control.
  • No more risk of snake bites. The rims are extremely well protected from denting.
  • Even in the toughest conditions, significantly lighter tires can be used.
  • Excellent emergency running characteristics due to the internal high-pressure air chamber.
PROCORE construction

construction in detail. The outer chamber is tubeless. Therefore, any
tubeless compatible MTB tire can be used. The tire should be at least 57
mm (2.25″) wide and be filled with some liquid sealant (approx. 60 ml).

PROCORE inner and outer tubes

inner chamber: Two special PROCORE components form the inner high
pressure chamber: the special Procore tube and the Procore inner tire.
This “core” is extremely high pressure stable and at the same time very

The rim: must be tubeless compatible and sealed with a
tubeless rim tape. It should have an inner rim width of at least 23 mm.
The wider the rim, the easier the installation and the better the
performance under low air pressure. The very wide Syntace rims are a
perfect fit.

The PROCORE valve: The patented dual valve on the
Procore tube distributes air into both chambers. The upper part of the
valve is a selector. With a simple turn, you select whether air is
pumped into the inner or the outer chamber.

PROCORE air guide

PROCORE Air Guide: The small red component made of soft plastic ensures
that the air can flow past the inner high pressure chamber into the
outer low pressure chamber.


can be mounted with any tubeless compatible MTB tire. It is compatible
with all wheels, independent of the brand. Minimum inner rim width is 23
mm. The system is available for all three MTB wheel sizes (26″, 27.5″,
29″) and weighs around 200 grams per wheel. The €195 kit includes the
following everything you need for two wheels:

  • 2 x PROCORE Inner tire
  • 2 x PROCORE Special tube
  • 2 x PROCORE AirGuide
  • 2 x 60 ml Doc Blue
  • Tubeless Rim tape
  • Easy Fit / 50 ml Sponge applicator
  • Tire levers
  • Assembly instructions

You can separately purchase the inner tube for €19,90, inner tire for €59,90 and the air guide for €2,90.

All photo’s are courtesy of Schwalbe

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