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  1. Unique236357 on

    It’s a steel fork so 4mm is nothing. If you need more, consider cold-setting. You can just swap the one with smaller OLD back without issues.

  2. All_Hail_King_Sheldn on

    It will cause no problems in the back.

     

    What worries me is you said fork, which is the part of the bike that holds the front wheel. Front hubs are generally (in this era of bike) either 96mm or 100mm. If you managed to pull the fork blades (the legs of the fork) apart enough to shove a 130mm wheel in there by hand, you have more issues, and need a new fork at a minimum.

  3. 126 -> 130 is no biggie.  Should be enough flex to accommodate that.

    FWIW: I think we know what you mean here, but the picture is of the front of the bike, and “rear dropouts” or “rear axle spacing” are more accurate terms than “fork” when referring to the rear of the bike.  If you _aren’t_ talking about the rear, let us know.

  4. I run a 130 rear wheel in a steel 126 frame. Initially was getting some axle nut slippage under heavy load. The frame was really only biting on the front edges on the dropouts so the rear wheel would walk a bit and I’d rub a tire.

    If you have problems like me, there’s a bike shop tool that they can use to help square up your dropouts to the wider width. Once I did, I haven’t had any problems.

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