Top 7 Motorized Bicycle Chain Tensioner – Bike Chain Tension Idlers

As an Amazon Associate I earn from qualifying purchases.

1. JRL

#ad

JRL 49cc to 80cc Motorised Bicycle Motorized Bike Pulley Chain Tensioner

#ad
JRL #ad - 49cc to 80cc motorised Bicycle Motorized Bike Pulley Chain Tensioner. Match original equipment exactly for a perfect fit, easy to install. Please check for the details and make sure this is the right one you need.
BrandJRL #ad
ManufacturerHuang Machinery #ad
Part Numberaz-8

2. DONSP1986

#ad

DONSP1986 48cc/50cc/66cc/80cc New Model Spring Chain Tensioner Kit-Gas Motorized Bicycle

#ad
DONSP1986 #ad - You have to cut off a little engine sprocket cover to make it compatible with the new spring chain tensioner. Forget this point if your bike doesn’t get the engine sprocket cover;.

Material: steel spring chain tensioner kit for 2 stroke kit 48cc/66cc/80cc; Engine kit is not included! This listing is only for the chain tensioner. Improve your bike's reliability! Tools required when you install it. 3/8" 9. 5mm or more would be ideal. Make sure you have at least 5/16" 8mm of clearance. This product Comes with 12months Warranty. Simple, clean design, and very effective. Any questions, please contact us firstly !We can help you solve the problem until you are satisfied. Some frames for example, some mountain bikes with three piece pedal cranks don't have much room between the pedals and engine.
BrandDONSP1986 #ad
ManufacturerDONSP1986 #ad
Part Numberchain1

3. CDHPOWER

#ad

CDHPOWER 48cc/50cc/66cc/80cc New Model Spring Chain Tensioner Kit-Gas Motorized Bicycle

#ad
CDHPOWER #ad - Make sure you have at least 5/16" 8mm of clearance. Any questions, please contact us firstly! we can help you solve the problem until you are satisfied. 4: simple, clean design, and very effective.

Improve your bike's reliability! 5: tools required when you install it; this product Comes with 12months Warranty. 1: material: steel spring chain tensioner kit for 2 stroke kit 48cc/66cc/80cc; Engine kit is not included! This listing is only for the chain tensioner. 3/8" 9. 5mm or more would be ideal. 3: you have to cut off a little engine sprocket cover to make it compatible with the new spring chain tensioner. Forget this point if your bike doesn’t get the engine sprocket cover;. 2: some frames for example, some mountain bikes with three piece pedal cranks don't have much room between the pedals and engine.
BrandCDHPOWER #ad
Manufacturercdhpower #ad
Part NumberCDH-BBR-180-1

4. GasBike

#ad

Idler Pulley Chain Tensioner, with 2 Bolts, With Bearing 80CC Gas Motorized Bicycle

#ad
GasBike #ad - Also for 4-stroke 49cc engines. Can also be used On 48cc, 66cc. Chain tensioner for 2 Stroke 48cc.
BrandGasBike #ad
ManufacturerChina #ad
Part Number1

5. DONSP1986

#ad

DONSP1986 New Spring Chain Tensioner Kit/New Chain Idler Assy for 48cc/60cc/66cc/80cc Gas Motor Bicycle

#ad
DONSP1986 #ad - Material: steel. Cut off a little engine chain guard to make it compatible with the new spring chain tensioner if uncompatible with engine chain guard. Forget this point if your bike doesn’t get the engine chain guard;. Improve your bike's reliability! Tools required when you install it. Simple, clean design, and very effective. Two colors of item are delivered at random. Spring chain tensioner kit for 2 stroke kit 48cc/66cc/80cc; Engine kit is not included! This listing is only for the chain tensioner kit.
BrandDONSP1986 #ad
ManufacturerDONSP1986 #ad
Part Numberjl-a-37

6. KMC

#ad

KMC Z410 x 112L Silver NP Single Speed 1/2-1/8 Chain

#ad
KMC #ad - Smoothriding hard finish. Dropbuster configuration Oversized Chain Plated For Landing And Grinding. All ig/hg invlude Missing Link Unless Noted. Nickel plated For Rust Resistance. Heavy duty construction for strength, 1/2- Inch x 1/8-Inch, 112 Links.
BrandKMC #ad
ManufacturerCycle Force Group #ad
Height3.5 Inches
Length3.25 Inches
Weight0.65 Pounds
Width0.75 Inches
Part NumberZ410 112 SILV
ModelKMC074

7. AlveyTech

#ad

AlveyTech Chain Tensioner for 48cc, 80cc 2-Stroke Bicycle Engine Kits

#ad
AlveyTech #ad - Monster scooter parts is the only authorized seller of Alvey, AlveyTech, and Monster Motion products. This is perfect for 48cc to 80cc 2-stroke bicycle engine kits. Our chain tensioner is 5-1/5" long and has a 1-3/4" roller diameter.
BrandAlveyTech #ad
ManufacturerAlveyTech #ad
Part NumberW75-8460