Middleburn RS7 RS8 Square Taper or ISIS 3arm DUO Double Ring Spider

Middleburn RS7 Duo was designed with the performance XC racer in mind, we were the first company to use a two ring set up for mountain bikes in 1995.

The inner ring/spider attaches to cranks using our exclusive Sweet Torque™ interface and acts as the 3-arm spider for the outer ring, saving weight.

All Duo outer chainrings utilise our slickshift technology, meaning that it is possible to run a 29T – 44T setup, maintaining a similar gearing range to a standard 3-ring chainset. Quite simply, it is perfect for all but the most severe terrain and offers a substantial weight saving.

MATERIAL: 7075 T6 alloy
RATIO: 27, 29, 32
CHAINLINE: 47.5mm using a 113mm bottom bracket
FINISH: Hardcoat (grey)