MIDDLEBURN RO1 SQ Double Road Spider

MIDDLEBURN, a British crank brand, offers sophisticated forged aluminum cranks that have been improved many times since 1991, and in recent years have evolved using modern technology such as 3D modeling. They guarantee to be the stiffest cranks on the market, yet lightweight.

RO1 SQ double road spider is made of "A7075", an aluminum alloy that is used in the aerospace industry.The material is manufactured through forging and CNC machining.

The unique lock ring shape is used, RO1 Square Taper Crank andrequired to install the RS7 Square Taper Crank . It is compatible with both single and double front cranks.

A colorful addition to a rugged crank, the MEDIUM / Medium Alloy Cup Crank Bolts Set is the perfect choice.

MADE IN THE UK

[SPEC]

Material: A7075 T6 Aluminum
BCD: 94mm, 110mm
Weight: BCD 94mm 45g, BCD 110mm 62g
Chainline (2x ring center): approx. 43.5mm for 107mm BB axle length, approx. 49mm for 118mm BB axle length
Chainline (1x outer side): approx. (1 x outer side): approx. 47mm for 107mm BB shaft length, approx. 52.5mm for 118mm BB shaft length

*Please purchase MIDDLEBURN RO1 Square Taper Crank andRS7 Square Taper Crank as well, since they use our original lock ring shape.