Double Air Chamber Mountain Bike Front Suspension Fork 26/27.5/29er

1.On left leg this is the positive air chamber with recommended pressure 120psi
2. This is a negative air chamber, which is used to adjust the soft or hardness. egative gas chamber 30-40psi. 3.Add positive gas first, then add negative gas The greater the negative air pressure, the softer the fork Negative air chamber should not be greater than 40 psi

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