Hero Genuine Chain Sprocket Kit (Chain Kit) for Passion XPro – Part No. 20K450S

Buy the Hero Genuine Chain Sprocket Kit / Chain Kit – 20K450S, verified for Hero Passion XPro (Sept 2012) fitment. This OEM chain-and-sprocket set helps restore smooth pickup, reduces chain noise, and ensures correct alignment—so you avoid fast-wearing local/duplicate sprocket sets. 

The Hero Genuine 20K450S Chain Sprocket Kit is a complete final drive replacement kit commonly searched as chain kit, chain sprocket set, chain gear set, or chain-dana set. On a Passion XPro, a worn drivetrain typically shows up as frequent chain tightening, jerky low-speed response, chain rattling, and hooked sprocket teeth. Replacing the chain and sprockets together is the correct repair because mixing new and old parts usually shortens life and increases noise.

This part number is listed on Hero’s official online parts store under Chain Sprocket Kits, confirming it as a genuine Hero item code in the catalogue.
For model fitment, multiple established spare-part sellers specify 20K450S for Passion XPro (Sept, 2012) and also list the common name “Chain Sprocket Kit / Chain Kit.”
Technical details published by trusted sellers further describe the kit as a 3-part set and mention material SCM440, which is useful for identifying the genuine spec in the market.

At underthehood.co.in, we ship genuine Hero parts with proper packaging and careful packing so you receive the correct kit in good condition—especially important for drivetrain parts where counterfeit supply is common.

KEY FEATURES / BENEFITS

• Genuine Hero chain sprocket kit – Part No. 20K450S

• Verified fitment reference: Passion XPro (Sept, 2012)

• Also known as: Chain Kit / Chain Sprocket Kit / Chain Sprocket Set

• Seller-published spec: 3-part kit (useful for verification)

• Material spec cited by sellers: SCM440

• Helps reduce chain noise and uneven wear caused by worn sprocket teeth

• Restores smoother throttle response and consistent power transfer

• Common local search terms covered: chain-dana set, chain gear set, sprocket set

• Packed carefully to reduce shipping damage for metal drivetrain components

COMPATIBILITY TABLE

Note (accuracy-first): Hero’s online store groups this as “Precision Fit for Passion,” but does not clearly publish all Passion sub-variants on the accessible page; therefore, we keep compatibility conservative to Passion XPro (Sept, 2012) where independent reliable listings agree.

TECHNICAL SPECIFICATIONS

• Part number: 20K450S

• Category: Chain Sprocket Kit / Chain Kit

• Applicable model (verified): Passion XPro (Sept, 2012)

• No. of parts (seller spec): 03

• Material (seller spec): SCM440

• Sprocket dia (seller spec): 61.4 mm

• Sprocket weight (seller spec): 0.09 kg

• Country of origin: India (Hero genuine supply chain)

WHAT’S IN THE BOX

• 1 × Hero Genuine Chain Sprocket Kit – Part No. 20K450S (1 set) 

INSTALLATION & USAGE NOTES

• Installation recommended at a Hero Authorised Service Centre or by an experienced mechanic.

• Replace chain + sprockets together for best life and smoothness.

• Set chain slack and rear wheel alignment as per owner’s manual/service practice.

• Re-check chain slack after ~150–200 km (initial bedding-in).

• Inspect chain guide/slider and rear sprocket fasteners during replacement.

• Clean and lube the chain regularly; avoid high-pressure wash directly on the chain.

FAQs 

Q1. Is 20K450S an original Hero part or aftermarket?
20K450S is listed on Hero’s official online store under Chain Sprocket Kits, and is sold as a genuine Hero item code.

Q2. Which bike does 20K450S fit?
Reliable seller listings specify Passion XPro (Sept, 2012) for this part number. If your Passion variant differs, confirm with a Hero ASC using the part number before ordering.

Q3. What is this part commonly called in the market?
Chain Kit, Chain Sprocket Kit, Chain Sprocket Set, Chain Gear Set, chain-dana set.

Q4. Does the kit include 3 parts?
Yes, seller specifications describe it as No. of parts: 03, which typically refers to chain + front sprocket + rear sprocket as a set.

Q5. My mechanic says only chain replacement is enough—should I replace full kit?
For best results, replace chain and sprockets together. Old sprockets can wear a new chain quickly and cause noise.

Q6. How do I confirm this is the correct kit before ordering online?
Share your chassis/VIN with a Hero parts counter/ASC and confirm the mapping for 20K450S.

Q7. Is this suitable for HF Deluxe / Splendor / other Passion models?
Do not assume. Hero uses different kits across model families/years. Confirm via Hero catalogue/ASC before ordering.