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Spring Loaded Chain Tensioner fit for 49cc 66cc 80cc Engine Motorized Bike 2 Stroke Engine (Silver)

  • Based on 311 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Sunday, Aug 10
Order within 16 hours and 16 minutes
Available payment plans shown during checkout

Color: silver


Features

  • High quality:Spring loaded chain tensioner that keeps chain from popping and snapping.Thicken metal, not easy to bend deformation.
  • Chain Tensioner Spring Loaded For 49cc 66cc 80cc Engine Motorized Bike.It mounts right to the motor and has a wide range of adjustments to fit your bike perfectly.
  • Can be used for all chain drive applications including center mount and rear mount chain drive for gas motorized bicycle plan kits.
  • Package Include: 1 Chain Tensioner Kit,1x spare spring chain tensioner Guide wheel,1 x spare spring
  • Professional after-sales:We sell professional auto parts ,and provide free technical support. If you have any problems or dissatisfaction after receiving the products, please contact us directly to get New Replacement or Return.

Manufacturer: ‎CNCMOTOK


Brand: ‎CNCMOTOK


Item Weight: ‎12.3 ounces


Package Dimensions: ‎4.76 x 4.57 x 1.97 inches


Manufacturer Part Number: ‎US-ZJL-17-Silver


Date First Available: May 31, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Aug 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Good!
Color: black
Exactly what I was in need of! Worked great! Shipping was fast.
Reviewed in the United States on March 13, 2025 by David Badour

  • It does the job it's intended for.
Color: silver
A bit thin, but multiple configurations and mounting options make it suitable for various chain driven machines. I have it on a 1000w electric mini bike with #35 chain and it keeps the slack tight fairy well, although the spring could be a bit stronger. I would recommend this tensioner for #35 chain or smaller. ... show more
Reviewed in the United States on December 18, 2024 by WhoDat

  • Doing a fine job!
Color: black
Way better than the tensioner that comes with the engine kit. My only complaint is the spring could be a bit shorter, and the hooks are not parallel to each other.
Reviewed in the United States on July 10, 2024 by Amanda'sdad

  • Smaller than expected
Color: silver
Item looks to be much bigger in the pictures than it really is
Reviewed in the United States on August 14, 2022 by james rodriguez

  • The best one to get
Color: silver
I’ve tried countless different spring tensioners. Many didn’t work from lack of adjustability. This one’s PERFECT!! I’m using a 32T sprocket and it tensions perfect.
Reviewed in the United States on August 1, 2023 by Dylan Schmidt

  • Sweet
Color: black
I can make something out of the parts here.. if you need to rig a tension system for a chain thei is great
Reviewed in the United States on May 18, 2023 by Billy sharp

  • Loctite
Color: silver
Loctite the bolt that mounts the arm to the plate before applying the nut, else the nut will fall off and you buy a new wheel like me! other than this the item works "perfectly"
Reviewed in the United States on March 24, 2024 by f ef e

  • Worked great for me
Color: black
Only thing I dislike is the bushing wears out pretty quick
Reviewed in the United States on August 4, 2023 by David A.

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