2020 Wilier

503X RACE PRO SRAM GX EAGLE 1X12

A 29″ aluminum frame hardtail crosscountry bike with high-end components.
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MSRP€1,550 (about $1,703)
Weight27.1 lbs  
FrameAluminum
SuspensionHardtail
ForkRockShox Reba
Wheels29″ Aluminum
Drivetrain1 × 12
GroupsetGX Eagle
BrakesHydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

28 mph

503X RACE PRO SRAM GX EAGLE 1X12

27 mph

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Highest gear

(descending)

Sizing
SM

5'1" – 5'8"

MD

5'6" – 5'10"

LG

5'8" – 6'2"

XL

6'0" – 6'5"

🐐 Estimated

Rider Fit Notes

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Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

ALU 6066/6061 DOUBLE BUTTED

Fork

ROCK SHOX REBA RL

Spring TypeAir

Bottom Bracket

SRAM GX PRESS FIT

Headset

RITCHEY CMP PRD15862

Stem

PROMAX DA282

Handlebar

PROMAX HB-3018

Saddle

SELLE ITALIA CUBIC

Groupset
Rear Derailleur

SRAM GX Eagle 12S

Crank

SRAM GX Eagle DUB 32T

Shifters

SRAM GX EAGLE 1X12

Cassette

SRAM EAGLE XG-1275 10-50T 12S

Chain

SRAM EAGLE GX 12S

Brakes

SHIMANO BR-MT501

TypeHydraulic Disc

Wheels
Rims

MICHE MTX

Tires

VITTORIA BARZO RIGID 29X2.25"

Disc Rotors

SHIMANO ST 54 180MM + 160MM, 6 BOLTS

Rider Notes
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Last updated July 31
Not listed for 1,352 days