OTTO TUNING SYSTEM - 9 SPEED CASSETTE
• Convenient - Do-It-Yourself. Make adjustments on your schedule.
Easy to Use - Interactive screen graphics and clear audio instructions.
Fast - CHECK confirms your tune quality in under 30 seconds.
Complete - TUNE provides barrel nut adjustments in under a minute and complete limit screw verification and adjustment in less than 10 minutes. *requires In-App purchase
Precise - Ensures shifting accuracy to +/- 0.125 mm (0.005 inches), less than 1/8 barrel nut turn.
• Platform Compatibility: iPhone 5, 5c, 5s, 6, 6+, 6s, & 6s+ running OS 8.1 or newer including iOS9
(Android not currently supported).
• Rear Derailleur Compatibility: Shimano 9-11 speed derailleurs
SRAM 9-11 speed derailleurs
MTB with barrel nut at handlebar have limited support/functionality.
• Audio-Guided Adjustments:
CHECK: Confirms tune quality / need for further adjustment
TUNE: (Fast) Barrel nut only
TUNE: (Complete) Barrel Nut, High Limit, Low Limit, Cable Tension.
• *Tuning and multiple bike profile functions require In-App Purchase; ranging from single use to one year programs. Click here for details. Note: The OTTO App includes other Free functionality, including the all-new CHECK function, which does not require In-App purchase.