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⚡️ Ride Tight, Ride Right – The Chain Tensioner That Keeps You Ahead
The SE Bikes SE Chain Tensioner is a high-performance alloy component designed for BMX and freestyle riders seeking durable, precise chain management. Compatible with standard 3/8" chains, it offers quick, tool-free adjustments to maintain optimal tension, reduce maintenance, and enhance ride smoothness. Crafted by SE Racing, it combines innovative engineering with sleek style, making it a must-have upgrade for serious riders.
| ASIN | B078H8VYJN |
| Best Sellers Rank | #49,762 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #1 in Bike Chain Tension Idlers |
| Brand | SE Racing |
| Brand Name | SE Racing |
| Customer Reviews | 4.5 out of 5 stars 645 Reviews |
| Included Components | Chain Retention System |
| Item Length | 9 Inches |
| Item Pitch | 0.38 Inches |
| Item Weight | 0.07 Kilograms |
| Manufacturer | SE RACING |
| Material | Aluminum |
| Material Type | Aluminum |
| Model | 4339 |
| Part Number | 4339 |
| Pitch | 0.38 Inches |
| Recommended Uses For Product | Bicycle wheel chain tensioning and securing |
| Strand Type | Single |
| UPC | 785749816852 |
| Unit Count | 1.0 Count |
S**B
Top Notch Quality
SE Bikes is the premier bicycle! All parts I have bought are top notch and high quality!
L**F
Excellent upgrade part
The SE bike tensioner works flawlessly and keeps my chain perfectly aligned. Easy to install and adjust, it’s a small upgrade that makes a big difference. I consider it an absolute necessity for any SE bike setup
F**K
Work great for my tall unicycle chain.
Needed new chain tensioners for my tall unicycle. Was going to pay $38 from unicycle.com when I was checking out, shipping was going to be another 20 bucks. That got me looking at other options. These work great! Much cheaper. East to put in and adjust. A win win win (unless you’re Unicycle.com.).
G**R
Very handy
I like these for micro chain adjustments and centering the rear wheel on all of my BMX bikes. I builds 20” BMX and this is an option that I highly recommend. They add some style too.
L**Y
Great product
Would be a five star but for some slight fit meant issue
D**T
this is a great product
fit correctly and it works great!!!
T**S
Glad I Went with These.
These are simple and quality. If they work on your bike frame, you will be quite happy. I don't even like tensioners but like a tighter chain, so one on my drive side lets me put tension perfectly. It holds up well, looks good, and is simple. I would buy again.
T**O
Don’t buy from China !
It didn’t come from China 🇨🇳. That’s why quality is 10 times better! If you like quality purchases check the vendor if it comes from China expect low quality and tough returns!!!!
C**E
5 de 5
Son SE, que puedo decir. Se bien bien sirven bien es lo que ocupas para tu bici crucero.
I**A
Fixes the issue of my rear wheel from sliding loose in the dropouts
I bought the aluminum chain tensioner for my 7 speed bicycle with belt drive. It fits the 3/8" (10mm) axel; and to mount it in place, I had to shave down the tip of the faceplate of the chain tensioner (shown in the second photo), which was fairly easy to do with a steel file. So far so good. The bike rides smoother and a bit faster with a tighter belt drive, and corrected the issue of my rear wheel from sliding loose in the dropouts when peddling.
A**R
SE
They work
Trustpilot
2 days ago
3 weeks ago