Both are Shimano SPD cross-country shoes with a carbon-reinforced midsole, a surround-wrapping upper, ULTREAD XC rubber and spike mounts. The XC703 is the competition model: stiffness index 9 against 7, and two BOA L6 Type Z dials with crossover lacing instead of the XC503’s single BOA L6C dial with its protective guard. The XC503 costs less and suits trail rides and first races; the XC703 is for racing and riders who want a stiffer, more precisely adjustable shoe. Both come in women’s versions too.

Gravel or MTB: should I pick an RX or an XC shoe?

Both families use SPD cleats, so either works on a gravel bike or a mountain bike. The difference is the sole. Shimano’s RX gravel shoes (RX600, RX710) use TPU outsoles tuned for pedalling efficiency and walking on mixed surfaces. Its XC shoes (XC503, XC703) use ULTREAD XC rubber with spike mounts for grip in mud and on technical ground off the bike. If you mostly ride gravel and walk on hard surfaces, choose RX; for mountain biking, muddy terrain or cyclocross-style running, choose XC.

Can I fit toe spikes for mud or cyclocross?

Yes. The XC503 and XC703, and their women’s versions, have spike mounts in the ULTREAD XC outsole. Shimano calls it rider-tunable traction: fit toe spikes for slippery trails and leave them off when you don’t need them. Shimano’s XC503 page specifies 18 mm toe spikes.

Do Shimano shoes run small, and what does Wide mean?

Shimano's own advice: cycling shoes are meant to be form-fitting and on the snug side, so if you are between sizes, size up. Measure your foot length standing with your heel against a wall and use the chart in the size guide. Wide sizes keep the same length and sole but add roughly 9–10 mm of circumference around the ball of the foot — the answer if the length is right but the forefoot pinches.

Which pedals and cleats do these shoes need?

SPD, Shimano’s two-bolt off-road system: the shoes take SPD cleats and work with SPD pedals, not with three-bolt road pedals such as SPD-SL. Shimano’s recommended pairing for these models is the DEORE XT PD-M8100 pedal. The recessed cleat sits inside the sole, so you can walk normally off the bike.

SHIMANO SHXC703 MTB/Gravel Cycling Shoes

Butterfly

€172,25

~~€219,99~~ €172,25

Tax Included
EU Destination Selected (Spain)

Low stock: 3 left

The essentials

Best for

XC racing
Fast trail riding
Muddy conditions

SHIMANO SHXC703 MTB/Gravel Cycling Shoes - Butterfly

Technologies

Specifications

Closure	2 × BOA L6 Type Z
Sole	Carbon-reinforced midsole, ULTREAD XC rubber
Stiffness index	9
Weight	322 g (Shimano)
Cleat system	SPD
Last	SHIMANO DYNALAST
Sizes	EU 38–48 (half sizes 39.5–46.5) · Wide 41–44, 46 (Black)

Sleek, secure lacing

A sleek, low-profile crossover lacing pattern that secures the forefoot.

Dual BOA L6 Type Z dials

A pair of compact BOA L6 Type Z dials for a precise fit you can fine-tune on the trail.

Surround-wrapping upper

A surround-wrapping upper structure reduces overlap and gives a glove-like fit. Shimano uses supple synthetic leather and breathable TPU mesh, integrated seamlessly with the midsole.

ULTREAD XC outsole

A lightweight SHIMANO ULTREAD XC rubber outsole that Shimano says delivers competition-grade grip, with a lug pattern for traction off the bike.

Rider-tunable traction

Spike mounts in the outsole let you fit toe spikes to tune grip to your riding style and the conditions.

Efficient pedalling

A remarkably light and rigid carbon-reinforced midsole (stiffness index 9) with a low stack height, which Shimano says gives optimal power transfer.

SHIMANO SHXC703 MTB/Gravel Cycling Shoes - Butterfly

Compare with

	SHIMANO SHXC703 MTB/Gravel Cycling Shoes - ButterflyShimano’s competition-level cross-country shoe, which it says borrows technology from its S-PHYRE line.	SHIMANO Sphyre SH XC903 - Black Choose it for Shimano’s S-PHYRE XC race shoe: stiff carbon sole, low-profile BOA Li2 dials and an anti-twist heel cup.	SHIMANO SHXC503 MTB/Gravel Cycling Shoes - Black Choose it for the same ULTREAD XC sole and spike mounts for less, with one protected BOA L6C dial.
Regular price	€172,25	€259,00	€139,96
Safety rating	—	—	—
Closure	2 × BOA L6 Type Z	2 × BOA Li2	BOA L6C
Sole	Carbon-reinforced midsole, ULTREAD XC rubber	Carbon	Carbon-reinforced nylon midsole, ULTREAD XC rubber
Stiffness index	9	—	7
Weight	322 g (Shimano)	—	—
Cleat system	SPD	SPD	SPD
Last	SHIMANO DYNALAST	—	SHIMANO DYNALAST
Sizes	EU 38–48 (half sizes 39.5–46.5) · Wide 41–44, 46 (Black)	EU 38–48 + Wide 41–47	EU 38–48 (Black to 50) · Wide 41–47 (Black)

SHIMANO SHXC703 MTB/Gravel Cycling Shoes - Butterfly

Size guide

EU	US	Foot length (cm)	Foot length (in)
38	5–5.5	23.8	9.4
38.5	5.5–6	24.2	9.5
39	6	24.5	9.6
39.5	6.5	24.9	9.8
40	7	25.2	9.9
40.5	7.5	25.5	10.0
41	7–7.5	25.8	10.2
41.5	8	26.2	10.3
42	8.5	26.5	10.4
42.5	8.5–9	26.9	10.6
43	9	27.2	10.7
43.5	9.5	27.5	10.8
44	10	27.8	10.9
44.5	10–10.5	28.2	11.1
45	10.5	28.5	11.2
45.5	11	28.9	11.4
46	11–11.5	29.2	11.5
46.5	11.5	29.5	11.6
47	12	29.8	11.7
48	12.5	30.5	12.0

Shimano: cycling shoes are meant to be form-fitting and on the snug side — if between sizes, size up. Wide sizes keep the same length but add about 9–10 mm of circumference around the ball of the foot.

How to measure

Stand on a sheet of paper with your heel against a wall, mark the tip of your longest toe and measure the distance in centimetres. Measure both feet and go by the longer one.

Find your size with a shoe you already own

Tell us a cycling shoe that fits you well and the size you wear in it. We compare the brands’ official foot-length charts.

Brand of the shoe you own Size you wear (EU)

An estimate from each brand’s official size chart. Width, volume and the last also change the fit — if in doubt, ask us.

Description

Shimano’s competition-level cross-country shoe, which it says borrows technology from its S-PHYRE line. Two BOA L6 Type Z dials and crossover lacing lock the foot in, a light carbon-reinforced midsole (stiffness index 9) drives the pedal, and ULTREAD XC rubber with spike mounts grips when you have to run. For XC racing and fast trail riding; for gravel with a lot of walking on hard ground, an RX shoe suits better.