The Friction Roll Damper found on the F104X1 Chassis (Item 84203) and F104W GP Edition (Item 84262) is available separately as a Hop-Up or spare-part for any Tamiya car that uses a friction roll damper or oil filled damper unit.
The damper adjustment is achieved by applying different viscosities of grease into the slotted low friction inner tube. Compared to using an oil filled damper unit, the friction roll damper can provide consistent roll characteristics due to its simple design and it has fewer parts to maintain.
Racers Tip: For both the RM-01 and F104V.2 you will have an easier time adjusting roll on outdoor tracks using this Hop-Up Option part. By simply applying different greases you will have the ability to quickly make adjustments. The oil filled roll damper is basically an oil-filled shock; it requires you to build it with no air bubbles to get the desired setting which can prove difficult for some builders. The use of a friction roll damper will allow you to make better use of your time on the track.