Trail / All-Mountain
Stelvio
The trail gearbox. Twelve gears, sealed for the long haul.
12 gears · 510% range · 1,885 g
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Products
Three gearboxes. One architecture.
Every Helicala transmission shares the same sealed planetary core and mounting interface. The differences are deliberate: ratio spread, section thickness, and weight, tuned to how the bike will be ridden.
