Of the frame pumps we tested, the Peakini II is the only one designed specifically for lower-volume tires, such as mountain bikes or beach cruisers. And it does its task beautifully. Lightweight, easy to use, and not bad looking, the Peakini will inflate tires up to 90 psi relatively quickly, making it an overall good investment.
Topeak Peakini II Review
Compare prices at 2 resellers Pros: Lightweight. Easy to use. High volume pumping
Cons: Cap over nozzle falls out a lot letting mud and dirt into nozzle.
Our Analysis and Test Results
Unfortunately, the Peakini II was not quite as durable as we would like a mountain bike pump to be, with the nozzle cap falling out a lot, allowing mud and grit from rides to collect in the nozzle. If you want to use this for particularly muddy, gritty rides, you might want to remove it from the bracket and stick it in your jersey or bag. If the terrain is dry, this shouldn't be much of a problem.
— Emily Zell