Available NOW.

Before ordering, ask for availability.
Thank you.

Considering the great demand, please send us a request by e-mail (if necessary indicate, please, size, color and version). The photo is indicative only for demonstration.

The 503X is the complete redesign of our flagship aluminium hardtail. We rethought the details, and tested the bike on the best MTB trails in the Dolomites. The 503X meets the needs of a wide mountain bike audience, getting more people off-road and into the mountains.

The 6061 double butted aluminum frame incorporates the latest advances in the offroad field:

- Tapered Head tube: 1 ½" bottom, 1 ⅛" top
- Integrated cables
- Press fit bottom bracket 92 mm
- Seatpost 27.2 mm diameter
- Direct mount Derailleur
- Thru-axle rear dropout: 142 x 12mm

The 503X is available with 29" wheels in 4 sizes: S, M, L, and XL.

FRAME PARTS
RITCHEY HEADSET COMP LOGIC ZERO
Chassis
FRAME 503X RACE S RED MATT 2022
Fork
ROCK SHOX RBA RL R 29 SB 100 DFB 51 A9
Handlebar stem.
LEE CHI STEM DA-282 60MM
Crease
LEE CHI H-BAR HB-3018TP 680MM
Seatpost
LEE CHI SEATPOST SP264 27.2X350MM
GROUP
SHIMANO XT 2.0 DISC 1X12
Wheels
SHIMANO WHEELSET MT501-29 24H BLK CLINCH
Crankset
SHIMANO CRANK FC-MT510-1 12S 32 170
Cassette
SHIMANO CASSETTE M7100 SLX 12S 10-51
Commands
SHIMANO SHIFT LEVER SL-M6100R RIGHT 12S
Brakes
SHIMANO BRAKE JKIT
SHIMANO BRAKE JKIT
Rotors
SHIMANO ROTOR SM-RT30 180MM CL
SHIMANO ROTOR SM-RT30 160MM CL
Exchange
SHIMANO REAR DER. XT 12S RD-M8100 SGS
Central movement
SHIMANO BB MT500 PA
Chain
SHIMANO CHAIN CN-M7100 12S 118L W / Q-LINK
Axis / thru axle
PROMAX REAR AXLE QR462 M12XP1.5-12LX180
Covers
VITTORIA TIRE BARZO 29 2.25 RIGID
Saddle
PROLOGUE SADDLE KAPPA-RS STN BLK OEM
Knobs
PLASTICS CASSANO GRIP ART.837SA BLACK

Available technical data: