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First Ride Review: YT JEFFSY 2019 – Trail DNA or an Enduro Mutation? | ENDURO Mountainbike Magazine
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2019 YT Industries JEFFSY 29 CF Pro – Specs, Comparisons, Reviews – 99 Spokes
The New 2019 YT Jeffsy 27 and 29 | BIKE Magazine - BikeMag
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YT Industries Jeffsy 29 CF Pro Race used in xl | buycycle
2020 YT Jeffsy 29 Pro Race - Out of the Box
