Hero Cylinder Kit / Cylinder & Piston Kit 21K201S – Fits Glamour, Super Splendor

The 21K201S Cylinder Kit is a genuine Hero engine overhaul component, including a fully finished cylinder, piston, rings, pin, clips & gaskets—all in one kit. This kit restores correct bore and compression when wear or damage has reduced performance. Designed as an OEM Hero spare (or equivalent high-quality replacement), it ensures compatibility, durability, and optimal sealing.

This cylinder kit is listed by multiple Hero parts suppliers as fitting Hero Glamour (New / post-2011) and Super Splendor engines. The kit contains 8 parts (cylinder body, piston, rings, pin, clips, gaskets) built with corrosion-resistant finishing. 

When your engine suffers low compression, noisy operation, or excessive blow-by, replacing individual parts may not restore factory performance. A full cylinder kit ensures precise bores, proper piston clearance, and better longevity. This is ideal for rebuilds, engine refresh, or high mileage maintenance.

Key Features

• Genuine Hero / OEM-spec 21K201S cylinder + piston kit

• Complete kit (8 pieces): cylinder, piston, rings, pin, clips, gaskets 

• Corrosion-resistant body & finished internally

• Restores original compression & smooth engine operation

• Machined bore to factory tolerances

• Direct replacement — no major modification required

• Ideal for engine overhauls, performance rebuilds, or worn engine fixes

• Backed by proven Hero parts network

Compatibility Table

✅ Confirmed only for Glamour (New / newer versions) and Super Splendor models per supplier catalogs.
❗ Do not assume fitment for other Hero models (Passion, Splendor, Xtreme, etc.) unless verified via microfiche or OEM diagram.

Variants

• Standard kit (single variant) 21K201S

• The kit includes all internal components; no left/right variants

• Color: typically black or matte finish as per OEM spec

FAQs

Q1. Will 21K201S kit fit my 2015 Hero Glamour?
If your model is the “New Glamour / newer version” and the bore specification matches, yes. But always cross-check with your service manual or parts diagram.

Q2. What exactly comes in the 8-part kit?
It includes: cylinder (barrel), piston, piston rings, piston pin, clips (retainers), and head / base gaskets.

Q3. Should I only replace the cylinder or the whole kit?
Using the full kit ensures matched tolerances and avoids mismatches. Replacing only the cylinder may lead to issues if rings / piston are worn.

Q4. Can I reuse my old gaskets / piston rings?
Not recommended. For reliable sealing and compression, always use new rings and gaskets included in the kit.

Q5. Any special installation tips?

• Ensure correct torque specs for cylinder head bolts

• Hone the bore lightly if recommended

• Use proper clearance spec, break-in oil, and alignment

• Clean all passages before assembly