Rolon BSORC Brass Chain & Sprocket Kit for Royal Enfield Classic / Bullet 350 UCE Rear Drum – 16T/38T 100L – Kit BSORC CL270

Genuine Rolon BSORC CL270 brass chain & sprocket kit for Royal Enfield Classic / Bullet 350 UCE rear drum brake variants only.

Comes with 16T front sprocket, 38T rear sprocket and 100-link chain for stock-style replacement fitment.

Important: If your Classic/Bullet 350 UCE has a rear disc brake, use Rolon BSORC CL272, not CL270.

Detailed Description

Rolon BSORC CL270 is a brass chain and sprocket kit made for Royal Enfield Classic / Bullet 350 UCE rear drum brake variants. It is designed for riders who want the correct stock-style chain-sprocket replacement instead of a mismatched local chain kit.

This kit is ideal when your Royal Enfield starts showing drivetrain symptoms like jerky pickup, chain slap, khat-khat noise, uneven pull, rusted chain links or hooked sprocket teeth. The verified setup is 16T front sprocket, 38T rear sprocket and 100-link chain, making it suitable for restoring the original riding feel on compatible rear drum UCE models.

The BSORC series is positioned as a brass-plated kit, with brass-plated inner and outer link plates for improved rust resistance and a premium gold/brass finish. It is a strong upgrade over tired, noisy or rusty drivetrain parts while retaining a practical gearing feel for city use, highway cruising and regular touring.

Fitment caution: CL270 is for rear drum variants only. Rear disc brake Classic/Bullet 350 UCE variants use Rolon BSORC CL272. Do not use this kit for J-Series Classic 350 Reborn, Meteor 350, Hunter 350 or New Bullet 350.

Buy from Under The Hood for genuine sourcing, careful packing, and fitment-focused support from an enthusiast-run spares and service store.

Key Features & Benefits

• Genuine Rolon BSORC CL270 brass chain & sprocket kit.
• Designed for Royal Enfield Classic / Bullet 350 UCE rear drum brake variants only.
• Not for rear disc brake models; rear disc variants use BSORC CL272.
• Verified configuration: 16T front sprocket / 38T rear sprocket / 100-link chain.
• Brass-plated inner and outer chain plates for enhanced rust protection and premium appearance.
• Helps reduce jerks, chain slap, khat-khat noise and uneven acceleration caused by worn drivetrain parts.
• Stock-style gearing feel for daily city rides, relaxed cruising and touring.
• Complete drivetrain replacement kit: front sprocket, rear sprocket and drive chain.
• Better than mismatching a new chain with worn sprockets or using an incorrect local kit.
• Direct-fit only for the specified rear drum UCE models when sprocket pattern matches.
• Genuine Rolon kit supplied by Under The Hood with fitment guidance before dispatch.

Technical Specifications

Compatibility

Confirmed Compatible Models

Likely / Check Before Ordering

• Classic 350 UCE rear drum variants using the same 16T/38T/100L setup.
• Bullet / Standard 350 UCE rear drum variants using the same hub pattern and front sprocket spline.
• Check rear hub pattern, front sprocket spline, current front/rear teeth count and chain length before ordering.

Not Compatible / Common Confusion

• Not compatible with rear disc brake variants of Classic / Bullet 350 UCE.
• Rear disc brake variant uses Rolon BSORC CL272, not BSORC CL270.
• Not for Classic 350 Reborn / J-Series.
• Not for Meteor 350, Hunter 350 or New Bullet 350 J-Series.
• Not for Thunderbird 350 / Thunderbird X 350 unless separately verified.
• Not for Classic 500 / Bullet 500 unless separately verified.
• Not a generic “all Royal Enfield 350” chain kit.

Variants

• Default Variant: Rolon BSORC CL270 Brass Kit – Rear Drum – 16T/38T/100L
• Best for Classic / Bullet 350 UCE rear drum riders who want a premium-looking brass replacement kit with stock-style gearing.
• Do not combine with CL272 rear disc kit, standard black/silver Rolon kits, J-Series kits or 500cc kits unless separately listed with verified specs.

What’s in the Box

• 1 x Front Sprocket – 16 teeth
• 1 x Rear Sprocket – 38 teeth
• 1 x Rolon Brass Drive Chain – 100 links
• 1 x Master link / connecting link – if supplied in current Rolon kit packaging
• Rear hub dampers / cush rubbers not included
• Rear sprocket mounting bolts not confirmed as included
• Front sprocket lock washer / nut not confirmed as included

Installation & Maintenance Notes

• Install at a professional Royal Enfield workshop for correct alignment, chain slack and torque.
• Replace the chain, front sprocket and rear sprocket together; do not run a new chain on old hooked sprockets.
• Before installation, confirm your current setup is 16T front / 38T rear / 100-link chain.
• Confirm rear drum brake setup before ordering. Rear disc variants require BSORC CL272.
• Check front sprocket spline and rear hub pattern before dismantling the motorcycle.
• Maintain chain slack as per Royal Enfield service manual for your exact model.
• Clean the chain with motorcycle-safe chain cleaner and relube every 500–800 km, especially after rain, washing or dusty riding.
• Avoid direct high-pressure water on the chain and sprocket area.
• Re-check chain slack after the first 200–300 km because a fresh kit beds in after initial riding.
• Inspect rear hub dampers during installation; worn cush rubbers can still cause jerks even with a new chain kit.

FAQ

Will Rolon BSORC CL270 fit my Royal Enfield Classic 350?

BSORC CL270 is for Royal Enfield Classic 350 UCE rear drum brake variants using 16T front sprocket, 38T rear sprocket and 100-link chain. It is not for Classic 350 Reborn / J-Series.

My Classic 350 UCE has rear disc brake. Will BSORC CL270 fit?

No. BSORC CL270 is for rear drum brake variants only. If your Classic/Bullet 350 UCE has a rear disc brake, use Rolon BSORC CL272 instead.

Is this for Bullet 350 or Classic 350?

It is suitable for Classic / Bullet 350 UCE rear drum brake variants when the 16T/38T/100L setup and sprocket pattern match.

Is this a brass chain kit?

Yes. Rolon Premium identifies CL270 as a brass chain and sprocket kit, and seller data mentions brass-plated inner and outer chain plates.

Is BSORC CL270 O-ring or normal chain?

IIt is solid bush / O-ring chain, . Verify the current Rolon packaging before marketing it strictly as an O-ring chain.

What are the sprocket teeth and chain length?

The verified configuration is 16T front sprocket, 38T rear sprocket and 100-link chain.

Will this reduce khat-khat chain noise and jerks?

Yes, if the issue is caused by worn chain links, tight spots, rust, hooked sprocket teeth or incorrect chain adjustment. Also inspect wheel alignment, cush rubbers and rear wheel bearings.

Can I use this on Classic 350 Reborn / Meteor / Hunter?

No. Do not use this listing for J-Series Royal Enfield motorcycles. Classic 350 Reborn, Meteor 350, Hunter 350 and New Bullet 350 J-Series require different fitment.

How long will this chain kit last?

Life depends on lubrication, chain slack, riding style, load, rain exposure and cleaning habits. Proper lubrication and correct slack will significantly improve service life.

Should I change cush rubbers with the chain kit?

If the rear hub dampers are loose, cracked or causing drivetrain play, replace them during installation. A new chain kit cannot fully remove jerks if the cush rubbers are worn.