Bike Accessories Reviews

Buy it if: You want a hybrid pump Forget it if: You'd rather pump than buy CO2 refills Verdict: The Two Timer is a nicely designed hybrid pump. One end is a minipump; the other is a CO2 inflator. The CO2 end gets your tire up to pressure quickly and accepts 16g threadless or threaded cartridges. The minipump is a great backup when you've used all your CO2 cartridges.