Looking for that extra few watts? Maybe the FMB handmade tubulars will get you over the line faster!

Ridea ES R4-91 cranks
Ridea ES R4-91 cranks

Ridea ES R4-91 cranks

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Ridea ES R4-91 cranks represent the standard and most common choice for cyclists of all kinds . With available chainrings from 48-32t to 56-44t and also options for single chainring, there is always a perfect combination for your rides.



Model name: Ridea ES R4-91

Crank material: CNC AL7150

Crank arm length: 145; 150; 155; 160; 165; 167.5; 170; 172.5; 175; 177.5; 180 mm

Compatible chainrings: Ridea Lami·Flow R4-91 series (single or double). Also compatible with any Shimano (R9100/8000/7000) compatible chaining.

Chain line: 44 mm

BCD: 110 mm (4 arms)

Q factor: 148 mm


Chain rings., Bottom bracket purchased seperatly extra


Allow 3-10 days delivery