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2026 Bross

KEYSTONE 3

A 29″ carbon frame hardtail crosscountry bike with upper mid-range components.
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FrameCarbon
SuspensionHardtail, 100mm
ForkRockShox Judy
Wheels29″ Aluminum
Drivetrain1 × 12
GroupsetSX Eagle
BrakesSRAM SX Eagle Hydraulic Disc
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Insights
Sizing
SM

5'2" – 5'8"

MD

5'6" – 5'11"

LG

5'10" – 6'3"

XL

6'1" – 6'7"

🐐 Estimated

Rider Fit Notes

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Geometry
Specs
Build
Frame

Lightweight carbon fiber frame, full internal cable routing, 148x12 rear axle, BB91 press-fit bottom bracket, 1X system

Fork

RockShox Judy TK, tapered, 100mm travel, 15x110mm

Travel100mm

Spring TypeCoil

Headset

BROSS internal cable routing headset

Stem

BROSS aluminum 6°

Handlebar

BROSS aluminum 720mm

Saddle

BROSS saddle / Selle Italia X-Base

Seatpost

BROSS aluminum 27.2 x 350mm

TypeRigid

Groupset
Rear Derailleur

SRAM SX Eagle, 12-speed

Crank

Prowheel MPX-B, 12-speed

Shifters

SRAM SX Eagle, 12-speed

Cassette

SRAM SX Eagle PG-1210, 12-speed

Chain

SRAM SX Eagle, 12-speed

Brakes

SRAM SX Eagle, 12-speed

TypeSRAM SX Eagle Hydraulic Disc

Brake Levers

SRAM SX Eagle, 12-speed

Wheels
Rims

BROSS aluminum tubeless rims

Front Hub

15x110mm

Rear Hub

148x12mm

Tires

Continental RaceKing 29x2.0 folding

Disc Rotors

SRAM 160mm front and rear

Rider Notes
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First added April 16

Last updated May 30