A report by Autocar has confirmed the addition of a slipper clutch on the Duke 390 naked bike; multiple dealers are unaware of the same and claim that they have not received any communication regarding the update from KTM yet. Customers looking to buy the Duke 390 with the new clutch are advised to confirm its presence at the time of booking as the fresh consignment may not reach all dealers uniformly.
The slipper clutch is used to prevent the rear wheel of a bike from locking up during extreme downshifting/engine braking scenarios. Also known as the back torque limiter, it allows the clutch to slip until the engine speed matches the speed of the bike and doubles up as a safety mechanism. This enables the rider to downshift aggressively and keep the bike stable under heavy braking/spirited riding sessions.
Source: SCOOP! KTM 390 Duke gets slipper clutch | Bike News | Bikes 350cc-500cc | Autocar India Admin: Please merge this thread to appropriate existing thread in the forum.