Thread: Compact Chainrings: How much difference do they make?
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Old 06-16-12 | 12:32 AM
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banerjek
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Bikes: Custom Winter, Challenge Seiran SL, Fuji Team Pro, Cattrike Road/Velokit, РOS hybrid

There's a huge difference -- it's totally different gearing and there is no doubt you'll notice. However, if you're doing fine with the 39, why bother with lower gears? But if you're hurting, go for it.
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