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โ๏ธ Keep your chain tight, your ride smoother, and your style unstoppable!
The sthus Spring Loaded Chain Tensioner is a premium, adjustable guide wheel designed for 49cc to 80cc 2-stroke motorized bikes. Engineered with corrosion-resistant metal and a spring-loaded mechanism, it ensures optimal chain tension and alignment, preventing derailment and sprocket wear. Easy to install with included hardware, this durable tensioner extends chain life and enhances riding performance.
| ASIN | B07NXX4PV4 |
| Brand | sthus |
| Brand Name | sthus |
| Customer Reviews | 4.1 out of 5 stars 2,551 Reviews |
| Item Weight | 300 Grams |
| Manufacturer | sthus |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Model | AMWZ_MZ0052-1 |
| Number of Items | 1 |
| Part Number | AMWZ_MZ0052-1 |
| Recommended Uses For Product | Ensuring proper chain tension in 49cc, 66cc, and 80cc motorized bikes |
| Strand Type | Single |
| Unit Count | 1.0 Count |
B**R
Good parts 100%
Works as it should excellent would buy again
C**.
Chain tensioner for motorized bicycle.
This is a great tensioner. I would have liked instructions with the unit but the advertisement shows pictures of proper installation. I recommend to add lock nuts and luberican to the tensioner wheel to keep it able to move freely and also on the pivot bolt and nut with washer and lock washer to give it ability to move as needed.
D**F
Best bet for chain issues
Excellent quality and fit, has kept my chain on for many miles. Only issue is bolt and nut that hold arm on loosens up. Needs a longer bolt so a lock washer can be installed. Do not overtighten the chain guide, it will not move and will cause issues with the bearings. Definitely worth the buy and far better quality than the closet door looking hardware that comes standard with the bike engines
D**Y
Love it
Easy to Assemble
B**N
Absolutely not usable
The hinge bolt constantly backs out over time. I feel like this wouldn't be a problem with a cotter pin or maybe just a crush washer or even just double nuts. Straight from the box this will absolutely not work and is a death trap. I'd rather just go back to my motors stock tensioner.
S**P
Proper alignment!
Just make sure you put it on properly I didnโt and mine self-destructed
R**S
Great value
Much better than the original chain tensioner.
S**S
Excellent
Excellent
W**M
The best!
I struggled with many chain tensioners thinking ok i got it this time...? Dont kid yourself.. spring-loaded tensioners are the best solution for sure! The one thing I needed to do.. I grinded the bolt heads down about half.. so crank peddle can pass freely.. Use double nuts on the bolt harnessing flex part, to lock tight but still loose enough for tensioner to flex.. Thats it.. Works great!
J**E
cheap hardware
everything fits good. my only problem is the cheap hardware. 1 bolt the threads all stripped off, and also the heads catch on my pedals. so i have to go to the hardware store and look for a couple better bolts. not a big issue. also the plastic roller wheel seems rather cheap, not sure how long its gonna hold up. for the price i guess it was worth it.
P**R
Recommended
Works great keeps just the right amount of tension on the chain!
R**E
Arrived on time
Packaged very good looks to be good quality
R**G
Adjustable chain tensioner
The bolts in the pictures are not the ones provided for mounting to the engine. They didnโt fit the mounting holes of the bracket so I had to drill them out to fit. I need to shorten my chain but it works a lot better than the one from the kit. Used on a pacific coast chopper/schwinn stingray
Trustpilot
4 days ago
2 weeks ago