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The crankset is the heart of the new 1x Ekar system, with its optimised gearing ratios, sensitively spaced across a wide range.
Campagnolo CMFC21EK1320 Crankset Ekar 13v 172.5mm 40T Ultra-Torque Pro-Tech
The crankset is the heart of the new 1x Ekar system, with its optimised gearing ratios, sensitively spaced across a wide range.
421577121-MAG
8053340455704
€365.00
€310.25
Save 15%
VAT included
You save €54.75 (15%) on the manufacturer's recommended price
Price history
- Today's price
- €310.25
- Lowest price of the last 30 days
- €310.25
- Manufacturer's recommended price
- €365.00 (15% less)
The price has not been reduced in the last 30 days. The recommended price is set by the manufacturer and is shown for reference only.
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Of course, the single chainring is simple to use – no front mech, significantly reduced weight, fewer moving parts to collect dirt or clog, and providing high chain security, with no wasteful gearing overlap – perfect for gravel riding and racing. The unidirectional carbon fiber cranks feature a strong, durable 630-grade steel alloy crank axle – following the maxim of smartly mating strength and light weight that is employed across the Ekar groupset. New ProTech™ technology joins the two semi-axles inside the bottom bracket, with a single, oversized bolt. Oversized stainless steel bearing sit on the crank, fixed on the semi-axles, for maximum smoothness and strength – and easily accessible for inspection and maintenance without the requirement to extract the cups.
The light, strong 7075 aluminum rings are easily interchangeable – you can simply unbolt them from the four spider arms with no requirement for crank disassembly. The four arms, which are asymmetrically set for optimal spread of the torque load, feature a 123mm Bolt Circle Diameter. Swapping rings is an easy and efficient way to switch out your gearing as you tackle different types of riding. A narrow 145.5mm Q-factor makes for a comfortable, efficient pedalling style, whatever your size. The UD carbon arms come with neat, removable protective end caps, to keep your components looking like new, whatever terrain you tackle.
Length: 172.5mm
Teeth: 44
Weight: 615 gr (172.5mm, 38T)
FEATURES & BENEFITS
Lightweight, efficient, secure 1x Ekar system – perfect for gravel riding and racing
2-piece cranks: ultra-torque 630 steel axle & UD carbon arms – strong and lightweight
4 ring options – Adventure (38T); Pure Gravel (40T), Fast Gravel (42T), Gravel Race (44T)
Narrow-wide tooth design – efficient drive & maximum chain security
ProTech™ strong, efficient, self-aligning Hirth joint semi-axles
Easy access to external crank bearings
Easily interchangeable alloy rings – no need to disassemble crank
Narrow Q-factor – 145.5mm
421577121-MAG
Data sheet
- Code
- RMS-STK160524
- Compatible with
- Campagnolo
- Use
- Gravel
- Teeth
- 40
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Who it is for and how to use it
Ideal for
Gravel with 1x drivetrain
It is designed for riders looking for a 1x crankset for gravel use, with a simple setup and a single chainring.
For riders seeking low weight and stiffness
The UD carbon fibre structure, with AISI 630 steel and 7075 aluminium, is aimed at reducing weight while maintaining pedalling efficiency.
For those seeking Campagnolo compatibility
It is suitable for those using Campagnolo components and the Ultra-Torque Pro-Tech standard.
Use cases
Ideal
Mixed gravel routes
The 1x crankset is suitable for gravel and reduces drivetrain complexity.
Gravel · 1x crankset · Campagnolo compatibility
Very suitable
Rides focused on weight and drivetrain cleanliness
The UD carbon fibre construction and the AISI 630 steel and 7075 aluminium components support use focused on lightness and efficiency.
UD carbon fibre · 615 g · 7075 aluminium
Suitable
Replacement on a Campagnolo 13v bike
Campagnolo compatibility and 13v support make it consistent with compatible groupsets and setups.
Campagnolo · 13v · Ultra-Torque Pro-Tech
Who it is for
Experienced gravel cyclist
- Looks for
- A lightweight 1x crankset consistent with the Campagnolo drivetrain.
- Why
- It offers a simple configuration, Campagnolo compatibility and the Ultra-Torque Pro-Tech standard.
Frequently asked questions
Which system is this crankset compatible with?
It is compatible with Campagnolo and uses the Ultra-Torque Pro-Tech standard.
What is the weight of the crankset?
The weight is 615 g.
What is the crank arm length?
The length is 172.5 mm.
What is it designed for?
It is designed for gravel.
How many speeds does it support?
It supports 13v.
Show all (6)
What is it made of?
The materials listed are UD carbon fibre, AISI 630 steel and 7075 aluminium.
Information prepared by the BSA team with the support of AI, based on the manufacturer's specifications.