Surly Monkey Nuts V3 Dropout Spacer

These spacers shift your rear wheel back in the dropout by 12.5mm. This is primarily used to increase tire clearance or to help you achieve the correct chain tension on single-speed setups without needing to remove links.

No, they are designed specifically for Surly frames with horizontal dropouts that use 10mm or 12mm thru-axles. Always check your specific frame's geometry and dropout type before purchasing to ensure a proper fit.

Yes, you generally need one for each side of the rear axle to keep the wheel centered and the tension balanced. The product is sold as a single unit, so plan to order two if you are setting up a standard rear wheel.

If you are running a geared setup, shifting the wheel back by 12.5mm can alter your chainline and derailleur hanger position. While they are most commonly used for single-speed or internal gear hub setups, you may need to adjust your derailleur limit screws or cable tension if using them on a geared bike.

Yes, if your tire is rubbing the chainstays, the Monkey Nuts V3 can provide the extra clearance needed to move the tire further back into the wider part of the frame. It is a common fix for riders looking to run slightly larger tires than their frame was originally spec'd for.