Royal Enfield Bear 650 Chain Sprocket Kit – Genuine OEM 15T/40T 520 Chain – KAA00190/A

Replace the worn chain and both sprockets on your Royal Enfield Bear 650 with the genuine Royal Enfield chain and sprocket kit, part number KAA00190/A. This standard-gearing replacement kit is specified with a 15-tooth front sprocket, 40-tooth rear sprocket and 520-series drive chain. It also lists the front sprocket retaining nut and tab washer—items that are easily overlooked when ordering drivetrain components separately.

The Bear 650 uses a distinctive chain and gearing specification. Select this kit by the complete OEM kit number, rather than assuming that a chain kit for another Royal Enfield 650 will fit. This is a motorcycle drive-chain and final-drive sprocket service kit, not an engine timing-chain kit.

Product identification

What is included in KAA00190/A?

Important connecting-link note: A separate chain master/connecting link is not identified as a distinct line item in the supplied five-component bill of materials. Do not assume a loose connecting link or rivet link is included until the actual sealed pack is checked. The 105-link count is reproduced from the OEM breakdown; some aftermarket manufacturers express chain length differently (for example 105+1), so do not substitute chains by a marketplace listing alone.

Why replace the chain and sprockets together?

• A worn chain can accelerate wear on replacement sprockets, while worn sprocket teeth can shorten the service life of a new chain.
• The matching 15T/40T tooth counts preserve the Bear 650 standard final-drive gearing rather than intentionally altering acceleration or cruising characteristics.
• Both the front-sprocket nut and locking tab washer are listed in this kit breakdown, providing the specified retaining hardware for the front sprocket.
• The genuine component numbers make it straightforward to check each item against the motorcycle VIN and Royal Enfield parts catalogue.

Compatibility

Do not order this complete kit for other models without part-number confirmation

Interceptor 650 (standard roadster), Continental GT 650, Super Meteor 650, Shotgun 650 and Classic 650 must not be assumed compatible merely because they use a 650 cc twin-cylinder engine or share one sprocket part number. Their complete-kit applications, chain lengths and final-drive components can differ. Nor is this a kit for Himalayan 450 or Guerrilla 450.

Is this the right chain kit for your Bear 650?

• Check the motorcycle model name and VIN; identify the OEM chain kit as KAA00190/A where applicable.
• Compare the original final-drive sprockets with 15T front / 40T rear, and check chain series 520.
• Check the original chain-length specification and the replacement chain connection method before disassembling the motorcycle.
• Confirm the exact OEM revision and local production-year application from the Royal Enfield EPC or dealer if your motorcycle has had drive-train modifications.

When should the chain and sprockets be inspected or replaced?

Have the final drive inspected if the chain repeatedly needs adjustment, has tight or seized sections, exhibits unusual noise, or if sprocket teeth show pronounced hooked, sharp or uneven wear. Chain slack alone is not enough to diagnose replacement need; inspect the complete drivetrain against the Royal Enfield workshop/owner manual and its service limits.

Installation and safety

• Professional installation is recommended; final-drive failure can be hazardous.
• Use the correct chain joining procedure for the actual chain supplied. Confirm whether an appropriate connecting/rivet link is included before installation.
• Follow the Bear 650 service manual for chain tension, axle alignment, wheel fasteners and front-sprocket retention; no unverified torque specifications are provided here.
• Inspect the chain slider/guide, rear wheel hub/cush rubbers, wheel bearings and sprocket carrier as appropriate. These are not stated as included in this kit.
• Recheck chain tension and wheel alignment after assembly and according to the maintenance schedule.

What this kit does not claim to include

No chain lubricant, chain cleaner, chain guide, cush-drive rubbers, chain breaking/riveting tool, axle hardware or separate chain link is claimed as supplied unless verified from the physical sealed package. This is not a complete rear-wheel or gearbox repair kit.

Frequently asked questions

Does this kit fit the Royal Enfield Bear 650?

KAA00190/A is described in the supplied genuine-parts breakdown as the Bear 650 chain and sprocket kit. Confirm the VIN-specific OEM application before ordering.

What are the front and rear sprocket sizes?

15 teeth at the front and 40 teeth at the rear, using 520-series chain.

Is the chain included?

Yes. The supplied kit breakdown lists one drive-chain component, part RAR00390/B, with OEM description 520, 105 link.

Is a chain connecting or master link included?

A connecting link is not separately shown in the provided five-line component breakdown. Confirm the contents of the sealed chain packet and joining method before installation.

Is this a genuine Royal Enfield kit or an aftermarket ROLON kit?

This listing is for the genuine Royal Enfield kit identified as KAA00190/A and its listed OEM components. It is not offered as a ROLON aftermarket kit.

Will it fit the regular Interceptor 650 or Continental GT 650?

Do not assume that it will. Both are separate model applications and may use different chain length or kit parts; use their own OEM kit reference.

Can I use this kit to change the gearing?

It is specified for the Bear 650 standard 15T front / 40T rear gearing, not as an altered-ratio upgrade.

Are the front sprocket nut and locking washer included?

The provided kit breakdown lists one 574267/C front sprocket M20 nut and one 574266/C M20 tab washer.

Does one order contain two sprockets?

The provided breakdown lists one 15T front drive sprocket and one 40T rear drive sprocket, plus the chain and specified retaining hardware.

Does the kit cover all Bear 650 production years?

The product is identified for Bear 650, but exact production-year and VIN-specific coverage should be confirmed against the current Royal Enfield EPC.

What should I check before ordering?

Verify the complete KAA00190/A kit number, the bike VIN, 520 chain series, sprocket tooth counts and exact original chain connection specification.

Should the chain and both sprockets be changed together?

They are commonly serviced together where worn; have the complete drive inspected and follow the Royal Enfield maintenance criteria.

Ordering and return-prevention information

Confirm the exact kit number and model/VIN compatibility before purchase. Correctly supplied spare parts are generally not returnable for incorrect selection, diagnosis, mechanic recommendation or change of mind once processed as described in Under The Hood policies. Record a continuous unboxing video and report any shortage, damage or incorrect item promptly within 24 hours of delivery in accordance with the store policy. Do not open or install parts before resolving an identity or compatibility concern.

Buyer search names

Royal Enfield Bear 650 chain sprocket kit; Interceptor Bear 650 chain kit; Bear 650 drive chain set; Bear 650 chain and sprocket replacement; genuine Bear 650 chain kit KAA00190/A; Bear 650 15T 40T sprocket set; Bear 650 520 chain; original Bear 650 chain sprocket assembly.

Reference part numbers

Kit KAA00190/A | Washer 574266/C | Nut 574267/C | Chain RAR00390/B | Rear sprocket RAT00472/D | Front sprocket RLL00096/C.