Headset Cup Remover 1 1/4"

Most current MTB and gravel frames run a tapered head tube: 1-1/4 inch upper cup, 1-1/2 inch lower cup, with the lower cup carrying the larger lower bearing of a tapered steerer fork. When a tapered headset's cups need to come out (for a frame swap, a worn bearing seat, or a corrosion-stuck cup that won't release), the smaller-range cup remover doesn't reach. The 1681.1/4 is the larger-range remover sized for the 1.25 inch through 1.5 inch cup-ID range, and it covers a useful crossover use case on the PF30 bottom-bracket side as well.

How it works

Mechanically identical to the smaller 1.0 inch through 1.25 inch Headset Cup Remover 1681/4, scaled up for the larger cup ID. Spring-loaded tool-steel flanges fold flat as the working end passes through the cup bore from inside the head tube, then snap out past the back skirt of the cup. A hammer tap from the opposite end drives the cup out evenly across its back face.

The flange spec is what carries the load on every strike. Tool-steel flanges with spring tension don't fatigue across years of bench use the way softer-steel flanges do, and the flanges that snap out cleanly on tap one are the flanges that snap out cleanly on tap ten years later.

Spec

• Material: tool steel; flanges spring-loaded
• Range: 1.25 inch through 1.5 inch cup ID
• Bonus compatibility: PF30 bottom bracket cups (same ID range)

Compatibility

The 1681.1/4 covers:

• 1-1/4 inch upper cups on tapered head tubes
• 1-1/2 inch lower cups on tapered head tubes (the dominant tapered standard on current MTB and gravel)
• 1-1/2 inch headsets on straight head tubes (rare but still in production on some gravity-bike designs)
• PF30 bottom-bracket cups; the same ID range. The 1681.1/4 doubles as a PF30 cup remover for shops that occasionally see PF30 BB work and don't want to buy a dedicated BB cup-remover for it.

The crossover with PF30 BB cups is one of those edge benefits that doesn't show up in the headline use case. A shop that does both road headset work and gravel suspension work on the same bench gets two tools' worth of coverage from a single product.

Built in Zreče, Slovenia

Unior has been forging hand tools in Zreče since 1919, and sponsors professional road and mountain-bike race teams. The 1681.1/4 is the larger sibling in the cup-remover line; the construction is the same tool-steel-and-spring spec, the working geometry is the difference. The PF30 BB-cup overlap is one of those the kind of small Unior cross-application detail that earns the tool real time on a bench running both head-tube and BB-cup work.

Pro tip from our mechanics

For PF30 BB cup removal, treat the cup the same way you'd treat a headset cup: pass the remover through, let the flanges snap out behind the cup, and tap the opposite end of the shaft. The PF30 shell isn't as deep as a head tube, so the working depth is shorter, but the engagement is identical. A shop that owns this tool covers two cup-removal jobs with one purchase. How this connects to the headset workflow: Bearing and headset service: a workshop guide →