Tire Removal Clamp, Hand Tires Removal Clamp Tire Lever Repair Tool and Spare Parts Tire Bead Jack Koolstop Tire Bead Jack Koolstop Tire Bead Jack

Some tyres simply will not go back on by hand. The last stretch of bead sits proud of the rim, and levering it over with a plastic tyre lever risks pinching the tube against the rim wall — the puncture you create while fixing the puncture you had. A bead jack clamps the rim and rolls the bead over instead of prising it.

How it works, and what it is actually for

The slotted jaw hooks under the tyre bead, the other end locates on the opposite side of the rim, and closing the handles rolls the bead up and over the rim edge in one movement. Because the load is spread through the tool rather than concentrated on a lever tip, nothing is being forced against a single point of the rim. The supplier describes it as a clip-in action, and anti-slip grips and a wire latch to hold the handles closed for storage.

This is a bicycle tool, and the listing should say so

Worth being plain about, because the title is not. The source describes it as suiting MTB and road bike tyres, fitting tyre widths up to 3 inches, and preventing punctures to inner tubes. Those are bicycle specifications. It is not sized or intended for car, 4WD or trailer tyres, and it will not seat a light truck bead. If you came to this listing looking for something to fit a vehicle tyre, this is not it.

Key features

• Rolls rather than levers: the bead is worked over the rim without a lever tip digging into it.
• Tube protection: the design is intended to keep the tube clear of the pinch point during seating.
• Anti-slip grips: textured handles for wet or greasy hands.
• Wire latch: holds the handles together so it packs flat in a workshop drawer or a ride bag.

Specifications

• Material: engineering nylon plastic
• Size: 31.5 × 9 × 2.5 cm
• Maximum tyre width: 3 inches
• Suits: MTB and road bicycle tyres, per the supplier
• Rim sizes: not published
• Weight: not published
• Load rating: not published

Using it without damage

• Deflate completely first. Any bead work starts with all the air out — a partially inflated tyre fights the tool and the bead will not move.
• Watch your fingers. The handles close under load and a bead that lets go suddenly moves fast.
• Keep the tube clear. Push the tube up into the tyre and away from the rim wall before working the bead over.
• Rim finish: the supplier states the plastic will not scratch rims. No test backs that up, so treat carbon or polished rims with care and check as you go.

Sold as an aftermarket bicycle workshop tool. Check the 3 inch maximum tyre width against what you actually run before ordering.