Ouster C1807

LooseLoose Over HardMediumMudwet

The Ouster from CST was built for the mountains.

This tire lives and breathes singletrack. Tall, open center tread keeps the mud off your tires and grips hard while climbing. Aggressive side knobs dig into loose soil and give you confidence to rail your bicycle through the turns. The Ouster is available in wire or folding bead in 26” and 29” sizes. The folding bead versions feature dual-compound rubber and EPS (Exceptional Puncture Safety) puncture protection.


Technology

Exceptional Puncture Safety

Exceptional Puncture Safety offers an added layer of proprietary rubberized poly-fiber material between the tread and the casing. The tight weave of this lightweight, puncture-resistant layer prevents foreign objects from penetrating the casing and damaging the tube.

Ouster C1807

LooseLoose Over HardMediumMudwet
Ouster C1807
Ouster C1807

The Ouster from CST was built for the mountains.

This tire lives and breathes singletrack. Tall, open center tread keeps the mud off your tires and grips hard while climbing. Aggressive side knobs dig into loose soil and give you confidence to rail your bicycle through the turns. The Ouster is available in wire or folding bead in 26” and 29” sizes. The folding bead versions feature dual-compound rubber and EPS (Exceptional Puncture Safety) puncture protection.


Specs


TIRE SIZE
ETRTO
TPI
BEAD
WEIGHT (grams)
COMPOUND
MAX PSI
TECHNOLOGY
26
TIRE SIZE
ETRTO
TPI
BEAD
Weight (G)
COMPOUND
MAX PSI
TECHNOLOGY
26X2.25
26X2.25
57-559
60
FOLDABLE
690
DUAL
65
EPS
26X2.25
26X2.25
57-559
27
WIRE
815
SINGLE
65
26X2.40
26X2.40
60-559
60
FOLDABLE
825
DUAL
65
EPS
26X2.40
26X2.40
60-559
27
WIRE
960
SINGLE
65
27.5
TIRE SIZE
ETRTO
TPI
BEAD
Weight (G)
COMPOUND
MAX PSI
TECHNOLOGY
27.5X2.25
27.5X2.25
57-584
60
FOLDABLE
715
DUAL
60
EPS/TLR
27.5X2.25
27.5X2.25
57-584
27
WIRE
820
SINGLE
65
27.5X2.40
27.5X2.40
60-584
60
FOLDABLE
870
DUAL
65
EPS
27.5X2.40
27.5X2.40
60-584
27
WIRE
970
SINGLE
65
29
TIRE SIZE
ETRTO
TPI
BEAD
Weight (G)
COMPOUND
MAX PSI
TECHNOLOGY
29X2.25
29X2.25
56-622
60
FOLDABLE
715
DUAL
60
EPS/TLR
29X2.25
29X2.25
56-622
27
WIRE
870
SINGLE
65
29X2.40
29X2.40
60-622
27
WIRE
975
SINGLE
65
29X2.40
29X2.40
60-622
60
FOLDABLE
845
DUAL
65
EPS

Technology

Exceptional Puncture Safety

Exceptional Puncture Safety offers an added layer of proprietary rubberized poly-fiber material between the tread and the casing. The tight weave of this lightweight, puncture-resistant layer prevents foreign objects from penetrating the casing and damaging the tube.