A 16T single-speed freewheel can replace a worn cog or help set up a single-speed bike, but chain width and hub threading must match. The Hycline is best for riders using a 1/8-inch chain who want listed size options; the Shimano is a 3/32-inch-chain option; and the ACS is suited to riders seeking a 1/8-inch freewheel with stated threading details. Compare the specifications before ordering, since 16 teeth alone does not guarantee compatibility.
| Product | Best for | Key listed detail |
|---|---|---|
| Hycline 16T Freewheel | 1/8-inch chain setups | Steel; 140 g |
| Shimano MX 16T | 3/32-inch chain setups | 16T × 3/32-inch |
| HomeSoGood 16T | Buyers checking basic dimensions | 34 mm inner thread diameter |
| ACS Main Drive 16T | BMX and stunt-bike replacements | 1/8-inch chain; 1.37-inch × 24 TPI |
| Relwears 16T Freewheel | Riders comparing gear sizes | 16T, 18T, and 20T options listed |
Hycline 16T Single-Speed Freewheel
This steel freewheel is best for a rider whose drivetrain uses a 1/2-inch × 1/8-inch chain. Its listed specifications include 16 teeth, a weight of 140 g, a 34 mm inner diameter, and a 1.375 mm thread pitch. The product description also identifies high-tensile steel and precision internal threading.
Choose this model if chain width is your main compatibility check and you want a product listing that provides several measurements. The listed 12T, 14T, 16T, 18T, 20T, 22T, and 24T sizes make it relevant to riders comparing gear choices. Limitation: verify the hub’s threading standard against the listing before buying; matching tooth count and chain width alone is not enough.
Shimano MX 16T Freewheel
The Shimano MX is best for a bicycle using a 3/32-inch chain. Its product name specifies a 16-tooth freewheel sized for 3/32-inch, and the listed feature describes it as compatible with a 1/2-inch × 3/32-inch chain. The listing also names the model SF-MX30 and describes a chrome-plated finish.
Choose this option when the narrower chain dimension matches your existing drivetrain. It offers a clear alternative to the 1/8-inch-chain models in this guide. Limitation: the provided feature details do not state the hub thread dimensions, so check the freewheel and hub specifications before ordering.
HomeSoGood 16T Bike Freewheel
This 16T freewheel is best for buyers who want basic physical dimensions to compare with a replacement part. The listed measurements are a 34 mm thread inner diameter, 69 mm outer tooth diameter, and 14.8 mm thickness. The description says it is made from durable material and characterizes the design as lightweight and compact.
Choose it if those measurements help you identify a potential replacement for your existing component. Limitation: the supplied product details do not specify chain width or thread pitch. Confirm both with the seller or product listing and compare them with your bike before purchase.
ACS Main Drive 16T Freewheel
The ACS Main Drive is best for riders whose setup calls for a 1/8-inch chain and the stated 1.37-inch × 24 TPI threaded standard. The product description identifies chrome steel construction and says the freewheel is intended for BMX and stunt-bike upgrades or replacements. Those details make it easier to compare with a hub that uses the specified thread.
Choose this model when both the chain size and hub threading match your bicycle. The description also refers to rust resistance and use in harsh riding conditions. Limitation: do not assume it fits a hub based only on the bike category; confirm the thread standard and chain dimensions.
Relwears 16T Threaded Freewheel
This steel freewheel is best for riders comparing a 16T replacement with other gear sizes. The listing specifies a 1.37-inch × 24T right-hand thread and says the product is available in 16T, 18T, and 20T sizes. The description highlights high-strength steel and wear resistance.
Choose the 16T version if that tooth count matches your existing gearing, or compare the listed alternatives if you are intentionally changing gear ratio. Limitation: the provided details do not state chain width, so confirm that specification before pairing it with your chain.
Buying Guide: How To Choose A 16T Freewheel
Does the chain width match?
Check the chain specification before selecting a freewheel. The products here include listings for 1/8-inch and 3/32-inch chains, which are not interchangeable assumptions. Match the freewheel to the chain and front chainring already on the bike. If a listing does not state chain width, seek confirmation instead of relying on the 16T label.
Will the threading fit the hub?
Compare the freewheel’s thread diameter and pitch or TPI with the hub’s specified standard. The ACS and Relwears descriptions state 1.37-inch × 24-thread details, while the Hycline listing gives a 34 mm inner diameter and 1.375 mm thread pitch. These measurements are presented differently, so verify the manufacturer’s compatibility information rather than treating them as automatically equivalent.
Should you keep 16 teeth or change the gear ratio?
A 16T freewheel preserves a 16-tooth rear cog when replacing a matching part. Changing tooth count changes the gearing: a larger rear cog generally makes pedaling easier, while a smaller rear cog generally supports a higher gear. Consider the front chainring and riding needs together; the product data does not establish a single ideal tooth count for every rider.
What should you inspect before ordering?
- Confirm chain width, hub threading, and tooth count.
- Compare listed measurements with the freewheel being replaced.
- Check whether the product listing identifies the needed size or finish.
- Do not infer compatibility from terms such as “single speed” or “BMX” alone.
Frequently Asked Questions
What does 16T mean on a freewheel?
16T means the freewheel has 16 teeth. It does not specify chain width or hub threading.
Can a 1/8-inch chain use a 3/32-inch freewheel?
Do not assume it can. Match the chain and freewheel specifications, and confirm compatibility for the drivetrain.
Are all 16T freewheels interchangeable?
No. Chain width, hub thread standard, and other physical dimensions can differ even when tooth count is the same.
How do I check the hub thread?
Consult the hub specifications or compare the existing freewheel’s thread details with the replacement listing. Ask a bicycle mechanic if the standard is unclear.
Does a 16T freewheel determine the bike’s full gear ratio?
No. The front chainring also affects the overall ratio, so assess both sprocket sizes when evaluating gearing.