You can replace a broken spoke yourself with basic tools and about 30 minutes per spoke
A broken spoke will make your wheel wobble and eventually collapse if you ignore it. You do not need a bike shop to fix it — you need a spoke wrench, a replacement spoke of the correct length, and a way to hold the wheel steady. The job breaks into four steps: remove the old spoke, thread the new one through the hub, connect it to the rim, and tension it to match the others.
The hardest part is not the replacement itself but getting the spoke length right. Spokes are measured in millimetres from the inside of the elbow to the tip, and the length depends on your wheel size, hub width, and rim diameter. If you order the wrong length, the spoke will either not reach the rim or stick out past the nipple. Most bike shops will measure a spoke from your wheel for free, or you can count the spokes on your wheel and look up the standard length for your rim and hub combination online.
Key Takeaways
- Replacement spokes cost between $2 and $8 each, and you need the exact length for your wheel or the spoke will not fit.
- A spoke wrench is the only special tool you must buy; you probably already own a screwdriver and pliers.
- Removing the old spoke takes five minutes; installing and tensioning the new one takes 20 to 25 minutes.
- If you tighten the new spoke too much, you will bend the rim; if you tighten it too little, the wheel will wobble again within days.
What you need before you start
Gather these items before you remove the wheel from the bike. A spoke wrench is a small metal tool with four or five different socket sizes; buy one that fits your spoke nipples (the small nuts at the rim end of each spoke). A standard spoke wrench costs $5 to $12 and works on most bikes. If you do not know your nipple size, bring a spoke from your wheel to a bike shop and ask them to match it.
You need a replacement spoke of the exact same length as the one you are replacing. Write down the length in millimetres before you remove the old spoke, or take the old spoke to a shop and ask them to measure it. Order spokes online or buy them at a bike shop; stainless steel spokes last longer than plain steel and cost only slightly more. You also need needle-nose pliers to bend the spoke elbow if it is damaged, a screwdriver to help pry out the old nipple, and a truing stand or wheel holder to keep the wheel still while you work. You can use a bike repair stand, a milk crate, or even a friend holding the wheel — anything that keeps it from spinning.
How to remove the broken spoke
Lay the wheel flat on your work surface with the valve hole facing up. Locate the broken spoke and loosen the nipple (the small nut at the rim end) by turning it counterclockwise with your spoke wrench. Turn slowly — you are not trying to remove it completely yet, just loosen it enough that the spoke has no tension. Once the spoke is slack, you can usually pull it out by hand. If the elbow (the bent part near the hub) is stuck in the hub, wiggle it gently side to side until it comes free.
If the nipple is stuck and will not turn, spray it with penetrating oil and wait 10 minutes. Turn the wrench back and forth in small motions rather than trying to force it in one direction. Once the nipple is loose enough, unscrew it the rest of the way by hand and set it aside. Pull the old spoke completely out of the rim and hub. If the nipple is damaged or stripped, replace it with a new one — they cost $1 to $3 and come in the same sizes as spoke wrenches.
How to thread the new spoke through the hub and rim
Hold the wheel with the valve hole facing up and the hub centered in front of you. Look at the pattern of the remaining spokes — they cross each other in a specific weave, usually two or three times between the hub and rim. Your new spoke must follow the same pattern. Count how many spokes cross over and under the new spoke's path before it reaches the rim.
Insert the elbow of the new spoke into the hub hole where the old one came out. Thread it through the rim hole, following the same over-and-under pattern as the spokes around it. The spoke should slide through easily; if it binds or feels forced, you may have the wrong length or the wrong hole. Pull the spoke taut but not tight — you are just seating it in place. Screw the nipple onto the spoke by hand until it is snug but still loose enough to turn with the wrench. Do not use the wrench yet.
How to tension the new spoke to match the others
This is where most people make mistakes. Spokes must be tight enough to hold the wheel round, but not so tight that they bend the rim or snap. The safest method is to match the tension of the spokes around your new one by ear and feel. Pluck a spoke next to your new one and listen to the pitch. Pluck your new spoke and compare. They should sound nearly the same — if your new spoke sounds much lower, it is too loose.
Use your spoke wrench to tighten the nipple a quarter turn at a time. After each quarter turn, pluck both spokes and compare the sound. Tighten until the pitch matches. This usually takes 8 to 12 quarter turns, depending on how loose the spoke was. Once the pitch matches, spin the wheel slowly and watch the rim. If it wobbles toward the new spoke, the spoke is too tight; if it wobbles away, it is too loose. Make small adjustments — one eighth of a turn at a time — until the wobble is gone or matches the wobble in the rest of the wheel.
Do not try to make the wheel perfectly straight on your first try. A wheel with one new spoke will often need a second adjustment after a few rides, once the spoke has settled. Ride the bike gently for a few miles and then check the wheel again. If it has developed a new wobble, loosen or tighten the new spoke by one eighth turn and recheck.
Common mistakes that damage the wheel or snap the spoke
The most common error is tightening the new spoke too much too fast. A spoke that is even slightly over-tensioned will pull the rim out of round and may snap during the next hard ride. If you are not sure whether a spoke is tight enough, leave it slightly loose — you can always tighten it later, but you cannot undo a bent rim.
The second mistake is threading the spoke through the wrong hole in the rim. If the spoke does not line up with the hub hole, it will not sit flat against the rim and the nipple will cross-thread. Remove the spoke and start over rather than forcing it. The third mistake is using the wrong spoke length. A spoke that is too short will not reach the nipple; one that is too long will stick out past the nipple and catch on the tire or brake. If you are unsure of the length, ask a bike shop to measure before you order.
When to replace multiple spokes at once
If more than one spoke is broken, you can replace them one at a time using the same method. However, if three or more spokes are broken, the wheel may be damaged beyond straightforward spoke replacement — the rim itself may be bent or the hub may be cracked. Ride the wheel gently to a bike shop and have them inspect it before you order new spokes.
If you break spokes regularly — more than one every few months — something else is wrong. The wheel may be out of true, the hub may be loose, or you may be riding too hard for the wheel's strength. A bike shop can diagnose the cause and tell you whether the wheel is worth repairing or should be replaced.
Frequently Asked Questions
How do I know what length spoke to order?
Measure the old spoke from the inside of the elbow to the tip, or take the old spoke to a bike shop and ask them to measure it. Write down the length in millimetres. If you do not have the old spoke, count the total number of spokes on your wheel and look up the standard length for your rim size and hub width online — most wheel manufacturers publish this information.
Can I use a different brand of spoke than the ones already on my wheel?
Yes, as long as the length, diameter, and nipple size match. Stainless steel spokes are stronger and last longer than plain steel, so upgrading to stainless is a good choice. Avoid mixing very different spoke types on the same wheel — a wheel with half plain steel and half stainless may develop uneven tension.
What if the nipple spins but the spoke does not tighten?
The spoke has probably cross-threaded or the nipple is stripped. Remove the spoke and nipple, inspect the threads, and replace the nipple if it is damaged. Rethread the spoke slowly and carefully, making sure the nipple goes on straight. If the spoke threads are damaged, order a new spoke.
How tight should a spoke be?
Tight enough that it does not rattle and the wheel does not wobble, but not so tight that the rim bends or the spoke snaps. The safest guide is to match the pitch of the new spoke to the pitch of the spokes around it by plucking them like strings. They should sound nearly identical.
Do I need to remove the tire and tube to replace a spoke?
No. You can replace a spoke with the tire and tube still on the wheel. The spoke passes through the rim hole, which is separate from the tire. However, if the broken spoke has punctured the tube, you will need to patch or replace the tube after the spoke is installed.