Sealant handles small punctures automatically, but anything beyond a few millimeters needs mechanical intervention. The Muc-Off Puncture Plugs Refill Pack restocks your plug tool with 15 tire worms across three sizes, covering the range of holes you're likely to encounter on road, gravel, and mountain bike tires. When sealant sprays out of a gash instead of filling it, these plugs give you a trailside repair option that doesn't require removing the tire or carrying a spare tube.

The pack includes 5 thin plugs sized for road tires and smaller punctures, 5 medium plugs for gravel applications, and 5 thick plugs for the larger holes that mountain bike tires pick up from rocks and debris. The sizing guideline is a starting point—match the plug diameter to the hole rather than strictly to your tire type. A road tire with a bigger gash might need a medium plug, while a mountain bike tire with a clean thorn puncture might seal fine with a thin one.

These plugs work with the Muc-Off Puncture Plug Repair Kit, Stealth Tubeless Puncture Plug, and Precision Tubeless Repair Capsule. The technique stays consistent across all the tools: ream the hole to roughen the edges, thread the plug through the tool tip, insert at a 45-degree angle following the tire direction, twist, and pull out the tool. Trim the excess after reinflating, leaving 3-5mm protruding from the tire surface. For road tires running higher pressures, replace the plugged tire when you get home—plugs are a get-you-home solution, not a permanent repair at 80+ psi.