Royal Enfield 594106/A – Pillion Seat Lock (Latch with Cable) for Thunderbird 350 & 500 (NTB / UCE) – Genuine OEM

The Royal Enfield 594106/A – Pillion Seat Lock (Latch with Cable) is the genuine OE locking mechanism used on Thunderbird 350 & Thunderbird 500 UCE (NTB series) to secure the rear pillion seat. The official Thunderbird 350/500 parts catalogue lists 594106/A as “Pillion Seat Lock (Latch) with Cable” in the seat assembly (04-10 / 04-20 sections), with one piece used on both 350 and 500 models.

Over time, the pillion lock can seize, rust, or the cable can fray, making it difficult to lift or secure the rear seat. Using a local lock/cable often results in poor alignment and unreliable locking. Replacing the complete latch with cable using 594106/A restores smooth key operation and factory-correct fitment—critical if you frequently carry a pillion or access storage under the rear seat.

At underthehood.co.in, we supply this part in original Royal Enfield packing, ideal for Thunderbird restorations, accident repairs, repaint jobs, or preventive replacement to avoid being stuck with a jammed pillion seat on tour.

Key Features

• Genuine Royal Enfield spare – Part No. 594106/A, exactly the same pillion lock and cable used on new Thunderbird 350/500 from the factory.

• Listed in the official Thunderbird 350 & 500 parts catalogue as “Pillion Seat Lock (Latch) with Cable” with quantity one per bike.

• Verified fitment for NTB 350 & NTB 500 Thunderbird models via The Spares Company fiche (“Fits in these models: NTB 350 | NTB 500”).

• Integrated lock body + latch + cable assembly for direct bolt-on replacement – no mix-and-match of generic locks and local cables.

• Designed to work with the common key set used on Thunderbird (ignition, fuel cap, side panel & seat locks) when sold as part of a matched key kit.

• Proper cable length and end fittings ensure smooth seat release and positive locking, reducing chances of a stuck seat on the road.

• Correct mounting points for Thunderbird seat sub-frame and back-rest assembly, avoiding drilling or modification.

• Ideal for touring bikes, restorations and repaints where old locks are rusted, damaged, or keys lost.

• Genuine part means better durability and corrosion resistance compared to unbranded aftermarket locks sold online.

Compatibility Table

CHECK PART NUMBER BEFORE PURCHASE 

Variants

• 594106/A – Pillion Seat Lock (Latch with Cable) – Single Assembly
  – This listing is for one complete latch + cable unit for the pillion seat.

• Typically used with 594102/A – Rider Seat Latch with Cable and 594129/B – Common Key Set (sold separately).

No LH/RH, colour or finish variants.

FAQs

Q1. Does this come with a key?
From fiche and dealer listings, 594106/A is the latch + cable assembly. The key itself is part of the common key set (e.g., 594129/B), not included with this part. If you are replacing a lost key, you’ll need the full key set kit – contact us with your requirement before ordering.

Q2. How do I confirm it will fit my Thunderbird?
Check your bike’s parts catalogue or existing lock for “594106/A” stamped on the label/pack. The official Thunderbird 350/500 EPC shows this exact number for the pillion seat lock on NTB 350 & NTB 500. You can also share your bike pictures and RC year with us and we’ll cross-verify before dispatch.

Q3. Is this lock suitable for Classic 350, Bullet 350 or Meteor 350?
Some generic sellers wrongly tag 594106/A for multiple models including Meteor and Classic. Official catalogues do not support this. To avoid returns, we only guarantee fitment for Thunderbird 350/500 UCE (NTB series). For any other model, match your part number first.

Q4. What problems does a worn pillion lock cause?
A worn or rusted latch/cable can cause hard seat release, mis-locking or complete failure to lock the pillion seat. That’s risky when carrying luggage or a pillion, and extremely annoying on tours. Replacing it with a fresh 594106/A restores smooth key action and secure seating.

Q5. Can I install this at home?
If you’re comfortable removing the pillion seat and routing cables, installation is straightforward: unbolt the old latch, disconnect the cable at the seat sub-frame, route the new cable the same way and refit. For perfect alignment and key matching, we still recommend installation at a trusted Royal Enfield workshop.