It's a standard Downhill 27.5" tube with Presta 40mm length valve. STANDARD - doesn't mean ordinary: quality rubber compound combined with even wall thickness makes ACID tubes reliable and durable. ACID tubes were tested in laboratory!
For 27.5" wider tires
For tire width (ETRTO size in mm): from 61-584 to 75-584
Valve type: Presta / SV
Valve length: 40 mm
MATERIAL: rubber
WEIGHT: ~ 190 g
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