Who is it for? The Shimano RP4 is the brand's most affordable BOA-dial road shoes. It is recommended for cyclists who look for or fall under the following:
- Enthusiast road bikers
- Beginner road cyclists
- Riders who are on a budget and are looking for BOA-equipped pairs
- Individuals who do not need uber stiff soles
What is it for? This Shimano road cycling shoe works excellently for leisurely road adventures and training sessions.
Lightweight and stiff. The Shimano RP400 employs glass-fiber reinforced nylon soles. They are rated 6 out of 12 in the brand's stiffness index chart, which means it yields enough stiffness for power transfer with a bit of flex for off-bike comfort.
Rubber pads. Sole rubber pads are provided to help keep the wearer stable and upright on smooth surfaces.
Breathability. Air pockets are placed in the sole to promote enhanced airflow and keep the foot from overheating in warm weather.
The Shimano RP400 features a three-hole SPD-SL compatible cleat design. Some of the pedals that work well with this model are Shimano Ultegra 6800, Look Keo Blade 2 CR and Ritchey WCS Carbon Echelon.
This pair offers a wider cleat adjustment range compared to the traditional cleat range. This feature offers the rider with more options in finding their most comfortable cleat positioning.
Comfort and breathability. The RP400 is crafted with a perforated high-density synthetic leather. It provides a comfortably snug fit and excellent airflow.
Quick and precise fit adjustments. The lockdown is governed by a single BOA L6 dial and double Velcro straps. The BOA L6 dial secures the top foot and offers adjustments in increments for an accurate fit.
The midfoot strap is designed to prevent pressure spots at the highest point of the foot, no matter how cinched it is. Lastly, the micro-strap is responsible for a snug forefoot fit.
The Shimano RP400 features the brand's Dynalast technology. This last's difference from the traditional cycling last is found in its toe-spring section. The Dynalast is designed with an optimal toe-spring height that promotes efficient pedaling, reduces energy and prevents injuries.
This cycling shoe utilizes adaptable cup insoles that offer added cushioning and enhanced overall comfort.
Plenty of consumers compare the RP400 and RP501 because both shoes are billed as some of the brand's more affordable road offerings. These two shoes also go head-to-head when it comes to the reviews they have garnered. To help road cyclists who are contemplating on which shoe to cop, then continue reading.
Both shoes appeal to beginner cyclists and individuals on a budget as they belong in the brand's budget-friendly category. The RP501 is priced a couple of dollars higher than the RP400, with the former having a $140 and the latter with a $130 price tag.
The Shimano RP400 features a synthetic upper with perforations throughout, while the RP501 is crafted with a perforated synthetic upper with a significantly sized mesh insert in the toe box. If you value excellent airflow, the RP501 might be more up in your alley.
Moreover, the RP501 has a seamless one-piece upper that prevents hot spots and pressure points.
Both of these offerings utilize a BOA L6 dial and Velcro straps for its retention system. However, the RP501 features just a single hook and loop straps that cinch the toe area. The BOA L6 in this shoe governs both midfoot and top foot, offering less fit customization than the RP400.
The Shimano RP400, on the other hand, employs two Velcro straps responsible for the forefoot and midfoot areas, respectively. While the BOA L6 dial solely secures the top foot.
The RP400's soles are rated 6 out of 12 in the brand's stiffness index chart, while the RP501 is rated an 8. The latter's soles are crafted from a glass-reinforced nylon sole, while the former is made with carbon-reinforced nylon soles.
If you need a bit more stiffness in your shoes, the RP501 suits you better.
- Irreplaceable sole pads
- Ventilation pockets in the outsole
- Wide cleat adjustments
- Shimano Dynalast