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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
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Part number: 12110-41603 (Piston, standard size)
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Bore size: 67.0 mm (STD for RM/PE250 of this era)
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Model family: Suzuki PE250 / RM250 two-stroke single
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Type: Bare piston – does not include wrist pin, circlips or rings (sold separately)
🏍 Confirmed Fitment
This piston is specified for:
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Suzuki RM250 – 1977–1979
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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?
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Correct crown shape and port window for proper scavenging and power
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Proper skirt clearance and alloy spec – designed for these air-cooled cylinders
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Fits factory wrist pin and ring set with no mods
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Ideal for restorations and period race bikes where you want factory reliability
🧼 Condition
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New old stock (NOS) genuine Suzuki
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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)
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Genuine Suzuki OEM piston – part 12110-41603
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Standard bore 67.0 mm – RM/PE250 1977–1979
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Correct crown and skirt design for stock port timing
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Suits classic RM250 & PE250 air-cooled two-stroke engines
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Bare piston only – rings, pin & circlips sold separately
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Perfect for restorations, vintage MX and reliable rebuilds