Royal Enfield Front Sprocket Retaining Nut M20 - 574267/C - Genuine OEM

Product Introduction

Royal Enfield 574267/C is the M20 retaining nut for the engine sprocket, commonly called the front sprocket or gearbox output sprocket. It secures the front final-drive sprocket in the applicable assembly.

This nut reference appears across a wide range of Royal Enfield motorcycles, including Bear 650 and other 650 twins, J-Series 350 models, Himalayan 411, Scram 411, Himalayan 450 and Guerrilla 450. Use the generation-specific application table below rather than selecting by engine capacity alone.

The product supplied is the exact 574267/C nut, one piece. The locking tab washer, sprocket and chain are separate. Some model parts books display the base reference 574267 without a revision letter; for those entries, confirm the full /C replacement reference against the current VIN/EPC before ordering.

Part Identification

What This Product Is

An individual threaded retaining nut for the front final-drive sprocket. M20 identifies the nominal thread size; it does not specify the spanner or socket size.

What This Product Is Not

This is not a rear sprocket mounting nut, rear axle nut, clutch centre nut, crankshaft bolt, sprocket, locking tab washer, spacer, oil seal or complete chain-and-sprocket kit.

Key Features

• Genuine Royal Enfield replacement reference with exact /C suffix.
• M20 engine-sprocket nut supplied as one individual component.
• Front final-drive retaining application.
• Allows the nut to be ordered separately from the sprocket and locking washer.
• Part-number selection helps avoid confusion with other transmission fasteners.

Buyer Search Names

Front sprocket nut, engine sprocket nut, gearbox sprocket retaining nut, output shaft sprocket nut, M20 sprocket nut, Royal Enfield 574267/C, 574267C.

Confirmed Compatibility

The following models have direct catalogue entries for this engine-sprocket nut reference. The reference column distinguishes exact 574267/C documentation from model parts books that show 574267 without a suffix. Catalogue years below are specific examples checked, not a claim that every intervening year or market specification is identical.

For rows showing only 574267, the model application is documented at base-number level; the /C revision must still be matched to the current VIN/EPC. Euro catalogue evidence does not automatically establish every Indian BS/OBD application. A shared nut does not make the sprockets, chain sizes, locking procedures or torque settings interchangeable.

Fitment Requires Verification

Not Compatible / Do Not Order For

• Do not order for an assembly specifying sleeve-gear nut 570246, or another front-sprocket nut reference, without a documented OEM replacement. For example, the Classic 500 EFI and older Thunderbird catalogues use a different sleeve-gear nut reference.
• Classic 350 Reborn/J-Series compatibility does not establish Classic 350 UCE compatibility. New Bullet 350 J-Series compatibility does not establish older Bullet/Electra UCE compatibility.
• This item is not a rear axle nut, rear sprocket mounting fastener, clutch centre nut or crankshaft bolt.
• Do not use it as generic M20 hardware or assume that all Royal Enfield motorcycles use the same nut.

Part Number / Revision / Supersession Notes

Order 574267/C, including the /C suffix. Exact-suffix documentation and base-reference model entries are identified separately in the compatibility table. The wider application list is based on each model’s own parts diagram, not a shared-engine assumption. A diagram showing 574267 confirms the base component application but does not itself establish the revision supplied for every VIN. No alternative suffix, supersession or universal interchangeability is claimed.

Similar Parts Comparison

Related references describe separate components, not interchangeable alternatives. Verify each related part independently for the motorcycle being repaired.

When Should This Part Be Replaced?

Have a qualified technician inspect the nut for damaged threads, rounded tool-engagement faces, deformation or evidence that it cannot be secured correctly. Replace it when damage or the applicable workshop procedure requires replacement. A loose sprocket, drivetrain noise or chain snatch needs diagnosis of the complete final drive; fitting a new nut alone may not resolve the cause.

Recommended Related Parts to Check

• Locking tab washer: correct reference, condition and service-manual replacement requirement.
• Front sprocket teeth and splines, plus gearbox output-shaft threads and splines.
• Sprocket spacer and output-shaft seal if movement, wear or an oil leak is present.
• Rear sprocket, drive chain, chain adjustment and wheel alignment.

What’s in the Box

1 × Genuine Royal Enfield M20 engine/front sprocket retaining nut, part number 574267/C.

Nut only. Locking tab washer, sprocket, chain, spacer, oil seal, tools and other fitting hardware are not included. Catalogue usage quantity and dealer minimum-order quantities do not describe a multi-piece retail pack.

Installation Notes

Professional installation is recommended because this fastener retains a drivetrain component. Follow the workshop manual for the exact motorcycle: support and secure the motorcycle, release the locking arrangement correctly and use the specified sprocket-holding method and tools. Inspect the shaft threads before fitting; do not force a nut that does not engage correctly.

Use the model-specific tightening torque, thread preparation, washer replacement and locking procedure. Do not substitute a generic M20 torque value or assume another Royal Enfield model uses the same procedure. Confirm the locking arrangement, sprocket seating, chain alignment and adjustment before returning the motorcycle to service.

Before You Buy / UTH Order and Return Policy

Check the complete SKU 574267/C against your motorcycle VIN/EPC and the component being replaced before placing the order. Confirm whether you also need a separate tab washer or other repair parts. Mechanic recommendations should be checked against the exact vehicle application.

Order cancellation is not available once processing has started. Correctly supplied spare parts are generally not returnable for wrong selection, incorrect diagnosis, mechanic recommendation, fitment mismatch or change of mind. Wrong-item, damaged-item or missing-item claims require a complete unboxing video and must be raised within 24 hours of delivery. Keep the packet and part label available for any claim.

Frequently Asked Questions

What is 574267/C?

It is the genuine Royal Enfield M20 engine/front sprocket retaining nut.

Is this the rear sprocket nut?

No. It retains the engine-side front sprocket, not the sprocket on the rear wheel.

Which motorcycles have confirmed fitment?

The full application table includes individually checked 350 J-Series, 411, 450 and 650 models, including Bear 650. It shows whether the source prints 574267/C or only 574267; match the complete reference before ordering.

Does it fit every version of those motorcycles?

The table includes specific earlier and later catalogue examples. Unlisted years, markets, BS/OBD versions and full suffix applicability still require a VIN-specific EPC check.

Can I order it for a Himalayan 450 or Guerrilla 450?

Both models have direct parts-book entries for base reference 574267. Confirm that the complete 574267/C revision matches your VIN/EPC before ordering.

Does M20 mean a 20 mm socket?

No. M20 is a nominal thread designation. Select the correct tool from the applicable workshop procedure and actual nut.

Is the locking tab washer included?

No. This is one nut only. The tab washer is a separate component; 574266/B appears alongside this nut in the Interceptor 650 Euro 4 catalogue.

How many nuts are supplied?

One piece. The confirmed catalogue application uses one retaining nut; this listing is not a set or workshop bulk pack.

Can I reuse the old tab washer?

Follow the exact workshop manual replacement and locking instructions. Have its condition checked and order the correct replacement separately when required.

Will replacing this cure chain noise or sprocket movement?

Those symptoms require inspection of the chain, sprockets, shaft, locking parts and adjustment. A nut is not a diagnosis or a guaranteed cure.

What torque should be used?

Use the workshop specification for the exact motorcycle. A universal torque value is not provided for this listing.

Is another suffix automatically interchangeable?

No interchangeability is implied. Order the complete 574267/C reference or obtain documented VIN-specific replacement confirmation.

SEO / Search Terms

Royal Enfield 574267/C M20 front sprocket nut; Bear 650 engine sprocket nut; Interceptor and Continental GT 650 retaining nut; Super Meteor, Shotgun and Classic 650 gearbox sprocket nut; Meteor, Hunter, Classic Reborn, new Bullet and Goan Classic 350 J-Series sprocket nut; Himalayan 411, Scram 411, Himalayan 450 and Guerrilla 450 nut. Match the generation and complete part number as shown in the application table.

Image Filename Suggestions

• royal-enfield-574267c-m20-front-sprocket-nut.jpg
• royal-enfield-574267c-nut-thread-detail.jpg
• royal-enfield-574267c-genuine-packet-label.jpg

Image Alt Text Suggestions

• Royal Enfield 574267/C M20 front sprocket retaining nut.
• Thread detail of the Royal Enfield 574267/C engine sprocket nut.
• Genuine Royal Enfield packet label showing part number 574267/C.

Use each description only with a matching photograph of the supplied item or packet.

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