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What I Learned Riding the Bontrager XR4 Tire - YouTube
Bontrager XR4 Team Issue TLR MTB Tyre - Trek Bikes (GB)
2.6in Tyre Grouptest - Bontrager XR4 Team Issue Tyre Review - Singletrack World Magazine
Bontrager XR4 and SE4 Team Issue Tires
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Bontrager XR4 and SE4 Team Issue Tires
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2.6in Tyre Grouptest - Bontrager XR4 Team Issue Tyre Review - Singletrack World Magazine
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10 best plus tires. Not really. Bontrager XR4 Review only. Top 10. Again, not really. - BikeMag
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10 best plus tires. Not really. Bontrager XR4 Review only. Top 10. Again, not really. - BikeMag
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Bontrager XR4 Tyres 2010 | Mountain Bike Reviews » Tyres | Free Mountain Bike Magazine | IMB
