OTK Genuine 50mm Sprocket Carrier

The OTK Genuine 50mm Sprocket Carrier (OTK part number 0047.FA) is a genuine OTK magnesium sprocket hub designed for compatible OTK-based kart chassis using a 50mm rear axle. It is used to mount the rear sprocket to the axle and maintain correct drive alignment between the engine, chain and rear axle assembly. Sold individually as a genuine OTK spare part.

Correct sprocket carrier fitment is fundamental to reliable kart performance. The sprocket carrier positions the rear sprocket on the axle and determines chain line, which directly affects drive efficiency, chain wear and overall chassis behaviour. Using the correct genuine OTK carrier for your axle diameter and chassis specification ensures the sprocket is held securely, the chain runs true and the drive system operates as intended. An incorrect or worn carrier can cause chain misalignment, premature wear and potential mechanical failure during a session.

Key features:

• Genuine OTK spare part
• OTK part number: 0047.FA
• Magnesium construction for strength and low weight
• 2-bolt / 2-screw fixing design for secure sprocket retention
• Double-sided design allowing installation in different orientations
• 50mm diameter — designed for 50mm rear axles
• Maintains correct chain line between engine, chain and rear axle assembly
• Sold individually

Product details:

• Brand: OTK
• Part number: 0047.FA
• Type: Sprocket carrier / sprocket hub
• Material: Magnesium
• Axle diameter: 50mm
• Fixing: 2-bolt / 2-screw
• Design: Double-sided
• Quantity: Sold individually
• Sprocket, chain, sprocket protector, axle, axle keys and fittings are not included

Fitment note:

This sprocket carrier is designed for compatible OTK-based kart chassis using a 50mm rear axle. Before ordering, customers must verify the following:

• Chassis model and manufacturer
• Rear axle diameter (50mm required)
• Sprocket type and chain pitch
• Chain line and engine class requirements
• Axle keyway specification
• Existing sprocket carrier part number and specification

This part is not suitable for every kart. It is intended for compatible OTK-based chassis where part number 0047.FA and the 50mm specification are confirmed correct.

Setup note:

This is a double-sided 2-screw sprocket hub. Depending on engine type and setup, the carrier may be installed in different orientations to achieve the correct chain line. Customers should follow OTK setup guidance or consult their mechanic if unsure of the correct installation orientation for their application.

Ideal for:

• Tony Kart chassis using a 50mm rear axle
• Kosmic chassis using a 50mm rear axle
• LN Kart chassis using a 50mm rear axle
• Exprit chassis using a 50mm rear axle
• CS55 chassis using a 50mm rear axle
• Gillard chassis using a 50mm rear axle
• Redspeed chassis using a 50mm rear axle
• EOS chassis using a 50mm rear axle
• Any compatible OTK-based chassis where part number 0047.FA and the 50mm specification are confirmed correct
• Direct-drive kart engine applications requiring the correct 50mm OTK sprocket carrier
• Kart racers, mechanics, race teams and owner-drivers maintaining or setting up an OTK-based chassis

If you are unsure whether this part is correct for your chassis, check your existing sprocket carrier part number or consult your chassis documentation before ordering.