Suzuki RM/PE250 Piston – STD Bore 67.0 mm – 12110-41603 – Genuine OEM

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Genuine Suzuki standard-bore piston (67 mm) for classic RM250 / PE250 1977–1979 models. Perfect for period-correct rebuilds or restoring an old-school motocrosser. New old stock OEM part number 12110-41603.


Full Description

Bring your vintage 250 two-stroke back to life with this genuine Suzuki piston.

This is the correct standard-size (STD) piston used in late-70s RM250 and PE250 engines. Suzuki offered this piston family in STD, 0.25 mm and 0.50 mm oversizes (-025 / -050)
Your part 12110-41603 is the STD bore version – ideal when your cylinder is still on its original 67.0 mm bore or has been replated back to standard.

✅ OEM Details

  • Part number: 12110-41603 (Piston, standard size)

  • Bore size: 67.0 mm (STD for RM/PE250 of this era)

  • Model family: Suzuki PE250 / RM250 two-stroke single

  • Type: Bare piston – does not include wrist pin, circlips or rings (sold separately)

🏍 Confirmed Fitment

This piston is specified for:

  • Suzuki RM250 – 1977–1979

  • Suzuki PE250 – 1977–1979

(It also cross-references to later supersession part 12103-40891-050 in Suzuki’s replacement listings

If you’re unsure, flick us your frame/VIN and year and we’ll double-check fitment for you before you buy.

🛠 Why use OEM?

  • Correct crown shape and port window for proper scavenging and power

  • Proper skirt clearance and alloy spec – designed for these air-cooled cylinders

  • Fits factory wrist pin and ring set with no mods

  • Ideal for restorations and period race bikes where you want factory reliability

🧼 Condition

  • New old stock (NOS) genuine Suzuki

  • Stored on the shelf – may have light marks on the box from age, but the piston itself is unused.


Shopify Bullet Points (copy straight into the “Key features” section)

  • Genuine Suzuki OEM piston – part 12110-41603

  • Standard bore 67.0 mm – RM/PE250 1977–1979

  • Correct crown and skirt design for stock port timing

  • Suits classic RM250 & PE250 air-cooled two-stroke engines

  • Bare piston only – rings, pin & circlips sold separately

  • Perfect for restorations, vintage MX and reliable rebuilds