125sx at 13,000ft.(3.7km)altitude

[stephendacosta]

Second year climbing BIG mountains on little motorcycles. Took two 125sx's up to Webster Pass above Montezuma, Colorado, USA
Primary sprocket was a 13. Main Jet was a 97.5. Stock rear sprocket and primary jet. Needed lower gearing for the really steep
climbs; had to flog the clutch. Needed 5-10 more teeth for the rear sprocket. Picked up another green 125sx in Reno, NV and a red
RT125 with only 1200mi. in St.Louis, MO. Not much room on the trailer.