250sx parts identity help

[diveman]

Picked up this 85 250sx bike for parts and somethings not jiving. Anyone know what or where this swingarm or drum came from?https://uploads.tapatalk-cdn.com/20211110/6a97ad67e42e38df38fd056e58ba5da9.jpghttps://uploads.tapatalk-cdn.com/20211110/e18a054a5b9fd275b8f8d3dc8c41d5ce.jpghttps://uploads.tapatalk-cdn.com/20211110/fb81a5f681d0a5c3b3b458f64423a099.jpg

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[big specht]

? What’s so off about it ? Maybe a trx250 rear end ?

[diveman]

Both my 86 and 87 look like thishttps://uploads.tapatalk-cdn.com/20211110/e0e77ed54c6b89f1ddebd870426648b6.jpghttps://uploads.tapatalk-cdn.com/20211110/51407429042d807cf01d0c04d26dc998.jpg

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[diveman]

The drum on the parts bike has adjusters side by side and what look cooling fins. Adjusters on the others are stacked.

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[diveman]

This is the 87 rear end

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https://uploads.tapatalk-cdn.com/20211110/c39a20f7d7589f7943f7a47a752d34d4.jpg

[big specht]

I bet it’s just the difference in the 85 swinger vers the 6/7.