Royal Enfield 1100684/B – Front Brake Master Cylinder Assembly (Black) for Classic 350, Hunter 350 & Meteor 350

Replace worn or leaking parts with the genuine Royal Enfield 1100684/B Front Master Cylinder Assembly (Black). This OE unit ensures firm lever feel and precise front-brake control, matching factory specification for bore size, internal seals, mounting, and reservoir interface. Designed in black finish, it blends seamlessly with current styling trends and maintains the OEM build aesthetics.

Fitment is confirmed with multiple UK/Euro V model trims of Classic 350, Hunter 350 Dapper, Meteor 350, and others listed by Iron City Motorcycles and other dealers. If your front brake lever feels spongy, leaks around the master cylinder, deteriorates under heavy use, or shows internal pitting, this assembly restores safety, control, and braking confidence. Installation involves bleeding the brake lines after replacement, using correct DOT brake fluid, and torquing per the service manual. Being a complete OE part, it reduces risk of poor fit, mismatched lever pull, or premature seal failure found in generic replacements. Order it as a single unit—front assembly only.

Key Features:

• Genuine Royal Enfield OEM part 1100684/B – Front Brake Master Cylinder Assembly, Black. Black finish styling matched to UK/Euro V trims (Classic 350, Hunter 350 Dapper, Meteor 350, etc.). 

• Exact factory dimensions & internal components (seal, bore, mounting holes) for reliable lever feel and safe braking. 

• Includes reservoir interface compatible with OE hoses; plug-and-play installation.

• Durable build quality and resistance to weather, heat, vibration.

• Reduces brake fade or softness caused by worn master cylinders.

Compatibility Table (Confirmed Models Only): ALL INDIAN +

Variants:

• Finish: Black (1100684/B). No chrome or alternate finish under same part number confirmed.

• Side: Front master cylinder only.

• Quantity: Single unit.

FAQs:

1. Is 1100684/B an OE (original equipment) part?
   Yes, it is a genuine Royal Enfield front master cylinder assembly, as listed by RE’s official parts catalog and authorized dealers. 

2. Will this fit my Indian BS6 Meteor 350 or Classic 350?
   Vendors in India list the part as “Meteor 350 Front Master Cylinder Assembly – Black part no. 1100684/B.”  However, there are sometimes regional variations in brake system parts; matching your current master cylinder’s mounting, lever design and reservoir height is recommended before purchase.

3. Do I need to replace anything else when installing this?
   It’s best to use new brake fluid, new seal washers for hose connections if required, and bleed the front brake circuit thoroughly. Check for any damage to hoses, lever mount, or reservoir.

4. How to detect if the master cylinder is failing?
   Common symptoms: spongy lever feel even after bleeding; visible fluid leak; lever bottoms out too close to grip; difficulty applying front brake.

5. Is this part painted/coated or raw metal?
   This version (1100684/B) comes with a black-finish body (painted/coated as per factory). The black finish matches trims on many UK/Euro V models.