This authentic factory-original air-cooled two-stroke cylinder barrel is built for classic Yamaha parallel-twin motorcycles. Cast from durable aluminum with large cooling fins and a heavy-duty cast iron liner, it provides efficient heat dissipation and reliable engine performance. The factory-shaped transfer, intake, and exhaust ports support smooth fuel flow and effective scavenging. Compatible Models Yamaha RD250 (1973–1975) — RD250, RD250A, and RD250B. Yamaha DS7 (1972) — Early 250cc air-cooled twin models. Fitment should be verified because some DS7 versions use a different piston-port intake layout. Technical Specifications Engine Displacement: 247cc Factory Bore Size: 54.00mm standard Casting Code: Y-1 Intake Style: Reed-valve induction Material: Aluminum barrel with cast iron liner
Please verify compatibility with your specific motorcycle model before purchasing.
Cleaning Status
partially_cleaned
Cleaning Notes
Used anti rust
Worldwide shipping available
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Estimated delivery: 2-5 business days
All items are carefully packaged for safe transit
Items can be insured — contact us for more information
30-day return policy on most items
Items must be in original condition and packaging
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Yes, all parts with OEM numbers are genuine manufacturer parts. Check the specifications tab for the OEM number.
We offer a 30-day return policy. Items must be in original condition. See the Shipping tab for complete details.
Yes, we ship to most countries worldwide. Shipping costs and delivery times vary by location.
Parts are sold separately. We recommend professional installation for safety and warranty purposes.
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$34.75
$34.75
$34.75
$44.75
