A Chiba drift park says it has started a Mobara circuit layout

A 1/10 RWD drift car runs a wheelbase of roughly 257 mm under a 190 to 200 mm polycarbonate body. Shrinking a full-size course to suit cars that size is not a straight division: a builder has to decide which corners survive the reduction, where walls go so a chase car has somewhere to be, and where clipping points land so a line is actually readable from a driver's position at the edge of the track.

Those decisions are the story, and they are the ones the written record here does not settle. The description does not give the surface — carpet, P-tile, polished concrete or asphalt all change the tire choice and the whole configuration a visitor would bring — and it does not say whether the Mobara layout is permanent or a configuration that will be changed out. It also does not state a spec tire, which matters at any venue that mandates one.

We have flagged those four points rather than guessing at them. A reader planning a trip should treat them as open.

The same posting points at two items in DMR's own BASE store, which the description lists as the ハイアッパー専用アッパーアームマウント, an upper arm mount for high-upper use, and the DMR フロントナックル ハイアッパータイプ, a front knuckle in high-upper type. Both sit in the front geometry of a 1/10 chassis, where upper arm mount height and knuckle design feed into camber gain and steering behavior.

The description does not state which chassis either part fits, and no price appears in the posted text, so we are not reporting one. The rest of the catalog is at the DMR online shop.

This is reported as a fact of the posting, not a recommendation: the circuit and the parts brand share a channel, which is common enough in the Japanese scene and worth naming plainly.

The upload is on YouTube from DMR Mikasu-Works, credited to that channel, which also runs a membership tier linked from the same description. If you want to see the layout before committing to the drive from Tokyo, that video is currently the only published look at it we can point to.