====== Motor and drivetrain: add-ons and improvements ======

Non-original parts and modifications for the [[preview:parts:drivetrain:start|motor and drivetrain]]: upgrades, community designs and conversions that Sinclair never offered.

Reproductions of //original// parts aren't listed here. They're on the page of the part they replace; for example, metal gearbox inserts are on [[preview:parts:drivetrain:gearbox|Gearbox]].

<WRAP important>Modifications that let the motor drive the C5 faster than 15.5 mph, or that use a motor rated above 250 W, take it outside the UK electrically assisted pedal cycle rules. See [[preview:guides:the_law|The law]].</WRAP>

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