Both are SPD-SL road shoes on Shimano’s DYNALAST last and both come in Wide sizes. The RC703 steps up to two BOA L6 dials and a carbon-composite midsole that Shimano rates 10 for stiffness, against one BOA L6C dial and a carbon-reinforced nylon midsole rated 8 on the RC503. Shimano Japan lists 244 g (EU 42) for the RC703 and 254 g (EU 43) for the RC503. If you race or ride hard group rides, the stiffer RC703 is worth it; for training and sportives the RC503 does the job for less.

The RP102 is Shimano’s entry road shoe: a Y-shaped cross strap, a glass-fibre reinforced nylon sole with stiffness 6 and, per Shimano, 237 g in EU 43, which is lighter than the RC503’s 254 g. The RC503 adds a BOA L6C dial you can fine-tune on the move, a carbon-reinforced nylon midsole rated 8 and Wide sizes. Pick the RP102 for fitness riding on a budget, the RC503 if you want a stiffer, more precisely adjustable shoe.

Does the RC503 come in wide sizes?

Yes. Shimano makes the RC503 in Wide as well as standard, and we stock Wide EU 41–47 in Black and White (the Cyber Blue is standard width). Shimano’s Wide sizes keep the same length and sole but add roughly 9–10 mm of circumference around the ball of the foot, so pick your usual length and choose Wide only if the forefoot pinches.

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.

New

SHIMANO RC503 Road Cycling Shoes

Cyber Blue

€117,99

~~€169,99~~ €117,99

Tax Included
EU Destination Selected (Spain)

+3 units in stock

New

The essentials

Best for

Road training
Sportives and group rides
First performance shoe

SHIMANO RC503 Road Cycling Shoes - Cyber Blue

Technologies

Specifications

Closure	1 × BOA L6C
Sole	Carbon-reinforced nylon midsole
Stiffness index	8
Weight	254 g (EU 43, Shimano average)
Cleat system	SPD-SL
Last	SHIMANO DYNALAST
Sizes	EU 38–50 · Wide 41–47

BOA L6C dial

BOA Fit System with an L6C dial and a lace profile engineered by Shimano. Shimano says it lets you adjust the fit quickly and easily, even while riding.

Perforated synthetic leather upper

A sleek upper in perforated synthetic leather with a new closure profile. Shimano combines supple synthetic leather with light TPU mesh to keep the foot ventilated and cool.

Surround-wrapping upper

The upper wraps all the way around the foot, which Shimano says reduces overlap and gives a glove-like fit.

Seamless midsole structure

Midsole and upper are joined without seams; Shimano says this sets a new level of fit, stability and light weight.

Carbon-reinforced nylon midsole

A nylon midsole reinforced with carbon fibre for efficient power transfer to the pedals.

Low stack height

A low stack height midsole that Shimano says stabilises the foot and optimises power transfer by keeping it close to the pedal.

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 RC503 Road Cycling Shoes - Cyber Blue

Compare with

	SHIMANO RC503 Road Cycling Shoes - Cyber BlueShimano’s mid-range road shoe with race features, for riders who want a stiff, secure shoe without paying for S-PHYRE.	SHIMANO SHRC703 Cycling shoes - Black Choose it for two BOA L6 dials and a stiffer carbon-composite sole (stiffness 10), with Wide sizes.	SHIMANO RP102 Road Cycling Shoes - Black Choose it for a simpler, lighter entry shoe: Y-shaped strap, glass-fibre sole (stiffness 6), 237 g, lower price.
Regular price	€117,99	€162,50	€61,95
Safety rating	—	—	—
Closure	1 × BOA L6C	2 × BOA L6Z	Y-shaped cross strap
Sole	Carbon-reinforced nylon midsole	—	Glass-fibre reinforced nylon
Stiffness index	8	—	6
Weight	254 g (EU 43, Shimano average)	—	237 g (EU 43, Shimano average)
Cleat system	SPD-SL	SPD-SL	SPD-SL
Last	SHIMANO DYNALAST	—	SHIMANO DYNALAST
Sizes	EU 38–50 · Wide 41–47	EU 39–48 + Wide 41–47	EU 38–48

SHIMANO RC503 Road Cycling Shoes - Cyber Blue

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
49	13	31.1	12.2
50	14	31.7	12.5

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

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 mid-range road shoe with race features, for riders who want a stiff, secure shoe without paying for S-PHYRE. One BOA L6C dial, a carbon-reinforced nylon midsole that Shimano rates 8 on its 12-point stiffness scale and a low stack height, at 254 g (EU 43) per Shimano. Want two dials and a stiffer sole? Look at the RC703; for casual riding on a budget, the RP102.

Carbon-reinforced nylon midsole, stiffness index 8, low stack height
BOA L6C dial with a Shimano-engineered lace profile
Surround-wrapping upper joined seamlessly to the midsole for a glove-like fit
Perforated synthetic leather and TPU mesh; 23% recycled material by weight in toe and midsole
SPD-SL, SHIMANO DYNALAST last, standard and Wide sizes

Available sizes