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Two red chain tensioner rollers, 36mm diameter, 8mm bore

Unique-Bargains

Unique-Bargains 2 Pcs 8mm Chain Tensioner Roller Red

SKU CH-B2KG-YDVY0

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

  • Product typeDrivetrain Components
  • Smoother chain operation with integrated duty bearings
  • Waterproof rubber-and-metal construction resists wear and corrosion
  • Fits most dirt pit bikes, street bikes, ATVs and off-road vehicles
  • Ready-to-use pair with 8 mm bore and 36 mm outer diameter
  • Quick bolt-on installation, professional fitting recommended

8 mm Chain Tensioner Roller Pair

Two red pulley wheels with 8 mm inner diameter and 36 mm outer diameter arrive as a ready-to-fit set for motorcycle drivetrains. Each roller combines a rubber running surface with a metal core and sealed bearings for immediate installation.

8 mm Bore Compatibility Limit

The fixed 8 mm inner diameter means the rollers only suit chains and tensioner bolts built to that exact bore size; wider or narrower axles cannot be used without modification. Manual measurement tolerances of roughly 1 mm may also affect precise alignment on some frames.

Replaces Worn Stock Rollers

These units swap directly for factory tensioner pulleys that have developed flat spots, bearing play or cracked rubber, restoring consistent chain tension. The upgrade is worthwhile when the original rollers show visible wear or produce drivetrain noise under load.

How it compares

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

Price $9.99
Cheaper than about 80% of the 85 comparable items (median $18.99).

Specifications

Product
Brand nameUnique Bargains
Product typeDrivetrain Components

Questions about this item

How do I know the 8 mm inner diameter will fit my bike?

Measure the existing tensioner bolt or axle; if it is 8 mm (0.31 in) the roller will slide on directly.

What does the 36 mm outside diameter change on the chain line?

The 36 mm (1.42 in) outer diameter matches many stock rollers, so chain wrap and tension stay the same as the original part.

Does the rubber-and-metal construction handle dirt-bike vibration?

Yes, the metal core with bonded rubber is designed for off-road vibration and is waterproof for wet conditions.

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