SRAM/Truvativ X0 X9 33T x 104mm 10 Speed Middle Chainring MFPN=11.5018.056.026 If using a regular presta

If using a regular presta valve you can remove the core and carry out the same procedure

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SRAM/Truvativ X0 X9 33T x 104mm 10 Speed Middle Chainring MFPN=11.5018.056.026 If using a regular prestaSRAM Truvativ X0 X9 33T x 104mm 10 Speed Middle Chainring. Original equipment on SRAM and Truvativ cranks they also work well with other drive trains. Supplied in TruVativ packaging TECH SPECS Tooth Count 33 Ring Position Type Middle Drivetrain Speeds 10 Chainring BCD 104 Color Black Defined Color Black Material Aluminum