Rolon BSOR 151 Sealed Chain & Sprocket Kit – Bajaj Pulsar 220 DTS-i / 220F (Twin Spark, BS3–BS6, 104L 520 O-Ring, 14T / 36T)

If your Bajaj Pulsar 220 has started feeling jerky, noisy, or rough at the rear wheel, it’s usually the stock chain and sprockets crying for replacement. The Rolon BSOR 151 Sealed Chain & Sprocket Kit is designed specifically as an upgrade / replacement for the Pulsar 220 DTS-i & 220F twin-spark models (OE ref. 36DK0040).

Rolon’s own kit catalogue clearly lists KIT BSOR 151 as “CHAIN KIT PULSAR 220 CC (TWIN SPARG PLUG)” with a R520BSOR-104-1 sealed (O-ring) chain, 14T front sprocket, and 36T rear sprocket – matching the Pulsar 220’s OEM gearing. Unlike cheap local kits, this sealed-ring chain retains lubricant inside the links for far longer, reducing stretch, cutting down chain slap, and delivering smoother power at highway speeds.

Buy from UnderTheHood.co.in for: genuine Rolon stock from authorised channels, careful packaging, support from riders who actually work on these bikes daily, and the option of guided installation help from our Varanasi studio. Pair it with quality chain cleaner & chain lube from our store for maximum life.

Key Features 

• Exact Pulsar 220 fitment: Designed specifically for Bajaj Pulsar 220 DTS-i / 220F twin-spark models as a replacement for OE chain kit 36DK0040.

• Sealed 520 O-ring chain: R520BSOR-104-1 sealed-ring (O-ring) chain for dramatically improved durability vs standard open chains.

• Correct gearing & feel: 14-tooth front + 36-tooth rear sprocket retains stock gearing for familiar pickup, torque and cruising RPM.

• Smooth, quiet drive: Precision-machined sprocket teeth and sealed chain construction reduce chain noise, slap and vibration at all speeds.

• High-strength construction: Rolon chain and sprockets built from high-tensile steel with proper heat treatment for long life under Indian road conditions.

• Corrosion & wear resistance: Surface treatments and sealed grease help protect against dust, water and mud for more consistent performance.

• Direct-fit replacement: Compatible with stock Pulsar 220 hub and sprocket carrier—no spacers, machining or extra mods required.

• Ideal for touring & city use: Handles daily commuting, highway touring with luggage, and occasional spirited riding with ease.

• Genuine Rolon kit: Sourced from trusted Rolon distributors—no local duplicate / loose chain + random sprocket mix.

• Under The Hood support: Backed by installation guidance, chain-care tips, and access to our blogs on chain maintenance & performance upgrades.

Compatibility Table

Only confirmed fitment is listed. Anything uncertain is marked with ❓ + caution.

Not compatible with: Pulsar 200 NS/RS, Pulsar 180/150, Avenger 220/200, Discover & other Bajaj models that use different rear sprocket tooth counts / hub patterns.

PLEASE CONFIRM PART NUMBER BEFORE ORDER 

Variants

This listing is for Rolon KIT BSOR 151 – Sealed O-Ring Chain Kit (14T / 36T, 104L) only.

If you also sell other Pulsar 220 kits, you can cross-link:

• Rolon KIT BSOR 139 – Pulsar 220 14T / 37T sealed kit (slightly taller gearing, different rear sprocket).

Explain on site (summary):

• BSOR 151 (14/36) – closest to OE Pulsar 220 twin-spark touring feel, better for highway & cruising.

• BSOR 139 (14/37) – slightly shorter gearing, a bit stronger low-end, slightly higher RPM at highway speeds.

What’s in the Box

• 1 × Rolon 520 O-ring drive chain – R520BSOR-104-1 (104 links)

• 1 × Front sprocket – 14T (Pulsar 220 DTS-i spline)

• 1 × Rear sprocket – 36T, Pulsar 220 hub pattern

• Master / connecting link (as supplied by Rolon)

• Basic manufacturer packaging & labelling

(Exact packing style may vary by batch; all parts are sealed and barcoded from Rolon.)

Installation & Maintenance Notes

• Always install the kit as a set (chain + both sprockets) to avoid accelerated wear.

• Check and set chain slack as per Bajaj Pulsar 220 owner’s manual (typically ~25–30 mm at midspan; confirm on your bike).

• Clean with kerosene or dedicated chain cleaner—avoid petrol / harsh solvents that can damage O-rings.

• Lube every 500–700 km or sooner in rain / dusty conditions using quality chain lube or SAE 90 gear oil.

• After any sprocket/chain work, re-check:

  • Rear wheel alignment

  • Chain slack

  • Torque on front & rear sprocket nuts

• If you’re unsure, get it installed at a trusted workshop or book an appointment at Under The Hood Studio, Varanasi.

FAQs 

Q1. Will Rolon BSOR 151 fit my Pulsar 220?
A. If you have a Bajaj Pulsar 220 DTS-i or Pulsar 220F twin-spark (S or F) using OE chain kit 36DK0040, this kit is designed as a direct replacement with matching 520 sealed chain (104L) and 14/36 sprockets. For very new BS6 models, we recommend confirming your existing sprocket tooth count before ordering.

Q2. How is this better than my stock chain kit?
A. Rolon BSOR 151 uses a sealed O-ring chain with factory-greased internals, helping reduce wear, stretch, and noise compared to worn OE or non-sealed aftermarket chains. You get smoother power delivery, less chain slap, and longer service life, provided you clean and lube it regularly.

Q3. Will this kit change my pickup or top speed?
A. No. With 14T front and 36T rear sprocket, this kit maintains the Pulsar 220’s stock gearing, so pickup, cruising RPM and top speed stay similar to factory feel—only smoother and more consistent thanks to the fresh sealed chain.

Q4. Is this a genuine Rolon kit or a local duplicate?
A. This is a genuine Rolon KIT BSOR 151 sourced from authorised Rolon distributors. Your invoice clearly mentions kit code BSOR 151 and bike model. We never mix-and-match loose chains and sprockets like unbranded market kits.

Q5. Do I need to change the sprocket dampers / cush rubbers too?
A. If your rear hub rubbers are cracked or have excessive play, we strongly recommend replacing them along with this kit for best results. You can find Pulsar rear drum/sprocket rubbers in our Bajaj spares section on underthehood.co.in.