How to sell small fitness equipment: dumbbells, kettlebells and smart trainers

Home gyms boomed for a while, and plenty of people now have equipment they've stopped using or replaced with a gym membership. Smaller fitness kit is easy to sell — the big stuff is better sold locally.

What we can buy

Postable items must be within 30kg and 1.5m. That makes the following a good fit:

• Adjustable dumbbells — Bowflex, NordicTrack and similar, as long as each item (or each box) is within 30kg.
• Kettlebells — within the weight limit.
• Smart turbo trainers — Wahoo KICKR, Tacx and Zwift Hub trainers within the limit.
• Rowing and bike accessories — power meters, cycling computers, heart rate monitors.
• Massage guns — Theragun, Hypervolt and others.
• Resistance kit — bands, suspension trainers, and similar.
• Fitness tech — smart scales, sports watches (see our smartwatch guide) and earbuds.

What's too big to post

Treadmills, exercise bikes, rowing machines, cross trainers, benches, power racks and weight plate sets over 30kg are too large or heavy for us to accept. Sell these locally, where the buyer collects.

A note on weight

The 30kg limit is per parcel. Very heavy items like a pair of large adjustable dumbbells may need to be split into separate parcels. Tell us exactly what you're sending when you get your offer.

Getting it ready

1. Clean it. Wipe down grips and handles with an antibacterial wipe.
2. Check it works. Adjustable dumbbells should click through every weight setting smoothly. Smart trainers should connect to apps and calibrate.
3. Remove from apps — smart trainers and fitness tech should be removed from your accounts and reset.
4. Find the bits — power cables, cassettes, axle adapters and manuals.

Selling

Describe your kit on SendForCash and get an instant cash offer. Accept it and we'll email a free postage label. We pay the same day we inspect.

Packing heavy items

• Use a strong double-walled box and plenty of padding.
• Make sure heavy items can't move — they'll punch through cardboard if they shift.
• Tape the box well along every seam.
• Original boxes are ideal for smart trainers and adjustable dumbbells.

Item-by-item: what to check

Adjustable dumbbells

• Click through every weight setting on both dumbbells and make sure the selector engages fully.
• Check the cradle (stand) isn't cracked — many adjustable dumbbells won't adjust properly without a working cradle.
• Look for loose plates or rattling.
• Note whether you're including both dumbbells and both cradles. A single dumbbell is worth much less than a pair.

Kettlebells and fixed dumbbells

• Check for rust and chipped coatings. Light surface rust can often be removed with a wire brush and a light coat of oil.
• Note the weight and type: cast iron, vinyl-coated or competition steel.
• Remember the 30kg parcel limit. Heavy pairs may need to be sent in separate parcels.

Smart turbo trainers

• Connect to Zwift, TrainerRoad or the manufacturer's app and run a short session to confirm power readings, resistance changes and connectivity.
• Run a calibration or spindown.
• Check for unusual noises, belt slip or wobble.
• Note whether a cassette is fitted and which axle adapters are included.
• Remove it from your apps and reset it.

Massage guns

• Test every speed setting and check the battery holds charge.
• Clean the attachment heads.
• Include the charger and case.

Heart rate monitors, power meters and cycling computers

• Remove from your apps and accounts.
• Replace coin cell batteries with fresh ones if needed.
• For power meters, describe the crank length or pedal type and whether it's single- or dual-sided.

Hygiene matters

Gym equipment is handled and sweated on. Buyers appreciate kit that's been cleaned properly:

1. Wipe all grips, handles and pads with an antibacterial wipe or a mild detergent solution.
2. Dry thoroughly — particularly metal parts, to prevent rust.
3. Remove any tape, chalk residue or stickers.
4. Wash removable fabric covers following the care label.

Selling large equipment locally

We can only take items within 30kg and 1.5m long. For bigger equipment — treadmills, exercise bikes, rowers, benches and racks — local selling is the way to go:

• Measure and photograph the item set up, and state the folded dimensions if it folds.
• Make clear the buyer needs to collect, and how many people it will take to move.
• Take payment before the item leaves your home, and never accept overpayments or courier arrangements from buyers you haven't met.

Smart fitness subscriptions

Many smart devices are tied to subscriptions. Cancel yours if you're not keeping a compatible device. The device itself can usually be used by the next owner with their own account once you've removed yours.

The fitness clear-out

Fitness kit often goes hand in hand with wearables. If you're selling a sports watch or heart rate tracker, see selling a smartwatch and selling an Apple Watch. If headphones are part of the haul, see selling AirPods and headphones. Our decluttering guide helps with the rest of the house.

FAQ

Do you buy treadmills or exercise bikes?

No, they're too large to post.

Can I sell a smart trainer without a cassette?

Yes, just say so when you get your offer.

Do you buy yoga mats or gym clothing?

We don't buy clothing. Low-value items like mats are unlikely to meet our £15 minimum on their own.

What about Peloton accessories?

Smaller hardware accessories such as weights and heart rate monitors are fine if they work. We don't buy cycling shoes or other footwear, and the bikes and treads themselves are too large to post.