The Blackburn Core Slim Mini Pump is built around a simple premise: a road pump you'll actually carry. At 247mm long, 21mm in diameter, and 127g, it mounts to your water bottle bolt so cleanly it disappears next to a cage — no frame bag, no jersey pocket required. Small doesn't mean underpowered. The Core Slim is rated to 120psi, and the tight plunger-to-barrel fit means you're actually getting there rather than losing half your effort to a leaky seal. A retractable flexible hose with a screw-on valve head keeps the connection secure while you pump — no blowouts mid-stroke. Blackburn also tucks a Presta valve core tool into the pump body, a genuinely useful touch for tubeless setups where pulling and reinstalling a valve core is part of the process. Backed by a lifetime warranty with replacement parts available, this is a pump designed to stay in service. Blackburn Core Slim Mini Pump Specs at a Glance Max pressure: 120psi Length: 247mm | Diameter: 21mm Weight: 127g Mount: Water bottle bolt included Includes integrated Presta valve core tool
