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On first inspection, the Impulse P21 is a refined and elegant
city bike, with all the fittings, including fenders, rack,
chainguard and even a single shifter that controls all 21
gears. But lurking underneath this civilized exterior is a
performance bike that's ready for hard and fast weekend rides
or heavy touring. The key is the SRAM DualDrive drivetrain
that serves up 21 widely spaced gears - enough for just about
any type of terrain. The SuperLite 4130
chromoly frame is extremely stiff for excellent power
transfer, but just compliant enough. The Kinetix
Aero rims and Schwalbe Marathon
Slick tires provide rocket-like acceleration. If you want
one bike for all different kinds of riding, the Impulse P21
deserves a serious look.
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