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.

S-PHYRE RC903 or RC703?

Shimano says the RC703 uses the same S-PHYRE fit technology as its pro road shoes, with a low stack height midsole, Power Zone lace guides and dual BOA L6Z dials. The RC903 steps up to two low-profile BOA Li2 dials, the anti-twist heel cup and a micro-fibre leather upper. The RC703 also comes in wide sizes from 40 to 50, which is often what decides it.

SHIMANO Sphyre RC903 Women Road Cycling Shoes

White

€399,99

~~€399,99~~ €399,99

Tax Included
EU Destination Selected (Spain)

Out of stock

The essentials

Best for

Road racing
Fast group rides
Long road days

SHIMANO Sphyre RC903 Women Road Cycling Shoes - White

Technologies

Specifications

Closure	2 × BOA Li2
Sole	Carbon
Cleat system	SPD-SL
Sizes	EU 36–42

Carbon sole

The sole plate is made of carbon fibre rather than nylon or carbon-reinforced nylon. Carbon is stiffer and lighter, so less of your effort is lost to flex; the brand’s stiffness index is in the spec table.

Streamlined heel cup

A smoothly integrated heel cup with Shimano's anti-twist stabiliser built inside it.

Low-profile lace guide

A slim lace guide that keeps the top of the foot clean and uncluttered.

Airy synthetic leather

A thin, breathable synthetic leather upper that Shimano uses to save grams for pro-level racing.

Dual BOA Li2 dials

Two low-profile BOA Li2 dials for a micro-adjustable, precise fit, which Shimano says is built for tough conditions.

360° wrapping upper

The upper surrounds the whole foot like a supportive cocoon; Shimano credits it for fit, stability and low weight.

Shimano's stiffest sole

DYNALAST carbon-fibre sole at stiffness level 12, the top of Shimano's scale.

DYNALAST

Shimano's cycling-specific last, the form that sets the shoe's shape and volume. Shimano says it secures the foot to reduce power loss at the pedal and fatigue on long rides, while an optimised toe spring reduces tension in the feet, calves and hamstrings. The Wide version adds volume around the ball of the foot on the same sole.

SHIMANO Sphyre RC903 Women Road Cycling Shoes - White

Compare with

	SHIMANO Sphyre RC903 Women Road Cycling Shoes - WhiteThe women's version, on a women's-specific last.	SHIMANO SHRC703 Cycling shoes - Black Choose it for S-PHYRE fit technology at a lower price, with dual BOA L6Z dials and wide sizes 40–50.
Regular price	€399,99	€167,95
Safety rating	—	—
Closure	2 × BOA Li2	2 × BOA L6Z
Sole	Carbon	—
Cleat system	SPD-SL	SPD-SL
Sizes	EU 36–42	EU 39–48 + Wide 41–47

SHIMANO Sphyre RC903 Women Road Cycling Shoes - White

Size guide

EU	US	Foot length (cm)	Foot length (in)
36	W5	22.4	8.8
37	W5–5.5	23.2	9.1
38	W6–6.5	23.8	9.4
39	W7	24.5	9.6
40	W8	25.2	9.9
41	W8.5–9	25.8	10.2
42	W9.5	26.5	10.4
43	W10	27.2	10.7
44	W11	27.8	10.9

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.

Size EU 36 EU 37 EU 38 EU 39 EU 40 EU 41 EU 42

Description

The women's version, on a women's-specific last. Shimano's road race shoe, which it calls the culmination of its most advanced technologies. Two low-profile BOA Li2 dials for quick micro-adjustment, a sole built for optimum stiffness, an anti-twist heel cup for explosive efforts and a perforated micro-fibre leather upper. Shimano's own sizing advice applies: snug by design, size up if between sizes.

Dual low-profile BOA Li2 dials for quick, precise micro-adjustment
Anti-twist heel cup stabilises the heel under explosive acceleration
Lightweight micro-fibre leather upper with perforated venting; SPD-SL compatible
Women's-specific last for a natural, comfortable fit

Available sizes