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Aero T | Summary | 
None    | no  | |
TSB11  | Seat Back that Locks when Folded    | NCO yes  | 
None   4" (10.2 cm) Deep Backrest Rigidizer Bar (10.2 cm Deep Backrest Rigidizer Bar) required with Heavy Duty Frame. 4" (10.2 cm) Deep Backrest Rigidizer Bar (10.2 cm Deep Backrest Rigidizer Bar) required with Bolt-On (Push Handles) & Bolt-On Height-Adjustable (Push Handles).  | no  | |
TSB12  | 4" (10.2 cm) Deep Backrest Rigidizer Bar Not a rounded style rigidizer bar.   | NCO yes  |