Royal Enfield Top Raiser (Handlebar Clamp Upper) for Thunderbird X 350/500 BS4 | 1120057/A | Genuine OEM

Royal Enfield 1120057/A is the TOP RAISER – HANDLE BAR (upper half of the handlebar riser/clamp) used on the Thunderbird X platform. This is the part that sits on top of the handlebar and works together with the Bottom Raiser (1120070/A) to clamp and hold the handlebar firmly at the correct height and riding position. In the Thunderbird X parts sheets (Steering Stem section), 1120057 “Top Raiser – Handle Bar” is listed as Qty 1, confirming it is a dedicated riser/clamp component—not a generic accessory. 

If your handlebar feels loose, the clamp has visible cracks, threads are damaged, or you’ve had a front-end impact where the riser got bent, replacing the correct OEM-spec top raiser prevents recurring issues like handlebar play, misalignment, or uneven clamping pressure. Dealer microfiche listings identify 1120057/A as “TOP RAISER-HANDLE BAR” as a genuine Royal Enfield part. 

Confirmed application: Thunderbird X 350 and Thunderbird X 500 (BS4 / ABS variants shown by dealers). 

Key Features 

• Genuine Royal Enfield part number 1120057/A 

• Official part name: TOP RAISER – HANDLE BAR 

• Functions as the upper handlebar clamp/riser (pairs with 1120070/A Bottom Raiser) 

• Thunderbird X parts sheets list it as Qty 1 (bike-level requirement)

• Helps restore correct handlebar alignment, clamp pressure, and ride ergonomics

• Correct replacement after crash damage, clamp cracks, or thread wear

• Best practice: inspect/replace related fasteners (e.g., domed cap bolts) if worn (listed adjacent in parts sheet) 

• Distributor price list corroborates part identity and pricing reference for trade validation

Compatibility Table 

Not claimed: Standard Thunderbird (non-X) / Classic / Bullet / Electra / Himalayan / Scram / J-Series / 650 Twins — not verified for 1120057/A in the cited sources.

Variants

• Single part (no LH/RH variant).

• Qty note: Thunderbird X parts sheets show 1 unit required. 

FAQs 

Q1. What is 1120057/A used for?
It is the Top Raiser – Handle Bar (upper handlebar clamp/riser) used on Thunderbird X handlebar mounting. 

Q2. Does it fit Thunderbird X 350 and Thunderbird X 500?
Yes—dealer applicability lists TBX 350 & TBX 500 (BS4), and both 2018 TBX parts sheets list 1120057 Top Raiser – Handle Bar. 

Q3. Is this a “handlebar riser kit”?
No—this is the top/upper clamp piece. It pairs with the bottom raiser and bolts (sold separately depending on your setup). 

Q4. My handlebar is loose—should I change this?
If the clamp is cracked/bent, threads are damaged, or clamping faces are worn, replacing the top raiser is the correct fix. Also inspect bottom raiser and bolts.

Q5. How many pieces do I need?
Parts sheets list it as Qty 1 for the Thunderbird X steering/handlebar clamp assembly.