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Two green chain tensioner rollers with metal bearings, 36mm diameter, 8mm bore

Unique-Bargains

Unique-Bargains Chain Tensioner Roller 8mm Green 2 Pcs

SKU CH-5MQ9-75ZED

Two green 8 mm chain tensioner rollers with sealed bearings for smoother drivetrain operation on dirt bikes, ATVs and motorcycles

  • Product typeDrivetrain Components
  • Smoother chain operation from sealed duty bearings
  • Easy installation with ready-to-use pulley assembly
  • Waterproof rubber and metal resists wear and corrosion
  • Fits most dirt pit bikes, street bikes and ATVs
  • 36 mm outer diameter with 8 mm inner bore

8 mm Green Chain Tensioner Rollers

This two-piece set supplies replacement idler pulleys for motorcycle and ATV drivetrains. Each roller measures 36 mm total length with an 8 mm inner bore and 36 mm outside diameter. The rubber-and-metal construction resists water and wear while the integrated bearings arrive ready to install. Green finish adds visibility during chain inspections.

Suits Single-Roller Chain Guides — Not Dual-Idler

Riders maintaining dirt pit bikes, street motorcycles or off-road quads with a single 8 mm tensioner position can use these directly. Professional fitting is advised to ensure correct alignment. Builders whose machines require two separate rollers per side or a different bore size must source alternative parts.

8 mm Inner Diameter Decides Fit

The 8 mm bore is the critical dimension that determines whether the roller matches the existing tensioner bolt or axle. Verify the current hardware before ordering; no other specification in the listing overrides this requirement.

How it compares

Measured against everything we stock in Bike Parts & Repair Tools, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 85% of the 85 comparable items (median $18.99).

Specifications

Product
Brand nameUnique Bargains
Product typeDrivetrain Components

Questions about this item

Does my bike need an 8mm bolt or axle to mount these 36mm rollers?

Yes, the inner diameter is 8mm so the mounting bolt or axle must match that size.

Will these green rollers work with the original metal tensioner arm on my older dirt bike?

The rubber and metal construction fits most dirt pit bikes and motorcycles, so they should mount on the existing arm if the bolt size matches.

How can I confirm the rollers are seated correctly after installation?

Spin each roller by hand; it should turn freely on its duty bearings without binding or side-to-side wobble.

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