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The ACS Main Drive Single Speed Freewheel (16T x 1/8-Inch) is a high-precision, durable chrome steel freewheel designed specifically for BMX and stunt bikes. Featuring a 16-tooth gear for smooth power transfer, a traditional 4-prong removal system for easy maintenance, and compatibility with standard 1/8" chains and threaded cassette bodies, it offers a reliable, rust-resistant upgrade that combines performance with sleek aesthetics.
| ASIN | B005Z5AAOG |
| Best Sellers Rank | #64,679 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #23 in Bike Cassettes & Freewheels |
| Brand Name | ACS |
| Customer Reviews | 4.6 4.6 out of 5 stars (406) |
| Global Trade Identification Number | 00816411001563 |
| Included Components | Single-Speed Freewheels |
| Item Length | 7 Inches |
| Item Weight | 4 ounces |
| Manufacturer | ACS |
| Material Type | Alloy Steel |
| Model | 63609-1000 |
| Part Number | 63609-1000 |
| Recommended Uses For Product | low-torque applications, specifically for fixie bikes |
| Roller Diameter | 0.13 Inches |
| Specification Met | Value-priced Freewheels With Assured Quality for Everyday Use |
| Strand Type | Single |
| UPC | 816411001563 |
| Unit Count | 1.0 Count |
S**N
Perfect replacement for my 1987 Schwinn Predator Free Form EX
Headline says it all, this is a perfect factory replacement for my old school BMX. Old one still spun but was crunchy while pedaling. Drivetrain is nice and quiet now. I knew it had to be the freewheel as I had just redone all the bearings in the bike front to back and replaced the chain. The only way I can see someone being dissatisfied with this part is if they ordered it unnecessarily. Might grab an extra for the parts bin.
E**N
Spin free
Great product!
F**.
Great as usual ACS is good stuff
Has good old fashioned freewheel sound
J**N
Good value for the money
You need a special tool to install this unless you have some type of welder
A**R
Good buy, definitely recommend.
Mine had no defects? Easy to install, needed to buy tool to install. Also around same price, I put them on Skyway Tuff 2. I have on an old school late 80’s Haro bike. Made bike look good, sound good, I would recommend this part.
A**W
Good replacement freewheel hub.
Good replacement freewheel hub.
W**!
so-so, quality.
It looks shiny chrome. And then when you look closer, it looks like its coated with aluminum foil. I'm surprised its not made of plastic underneath the foil. Buuut,, you get what you pay for!
A**L
Tried and True
It's a standard on the market. I knew I couldn't go wrong with it.
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