JUN Auto

JUN Auto’s Iruma facility is the company’s mechanic, machining and bodywork hub for engine parts and performance work. The site handles machining, engine assembly, tuning and paint/aero work under the JUN group.

Located in Iruma, Saitama, the factory offers a direct view into a working performance‑parts operation with official access information, onsite parking and a published contact for mechanic inquiries. It’s useful for enthusiasts, engineers and anyone researching authentic Japanese tuning vendors.

A compact working factory visit focused on technical operations rather than a tourist attraction. Expect to see machining, engine assembly and body/paint work areas when visiting with prior contact.

Look out for:

• CNC and lathe machining areas used for engine parts production.

• Engine assembly and tuning bays under the JUN Auto Mechanic division.

• Bodywork/painting and aero parts work from JUN Auto Works.

• Factory signage, loading areas and on‑site parking.

Best way to experience it:
If you plan to visit, contact the Mechanic division first (mechanic@junauto.co.jp or the listed phone) to confirm access and any visit arrangements. By public transport, use Seibu Ikebukuro Line to Irumashi Station and a local bus to the nearest stop, then a short walk; driving via Route 16 is common and parking is available.

• Business hours are listed on the official site as 9:00–17:45; the factory observes Sundays and scheduled holidays.

• Contact the Mechanic division (mechanic@junauto.co.jp) before visiting to confirm access.

• The site is an active industrial facility—follow staff instructions and safety signage.

• Nearest public transport: Seibu Ikebukuro Line to Irumashi Station plus local bus, then an ~8‑minute walk.