Rear Wheel Adjuster RH (Brake Side, 22mm) for Royal Enfield Classic 350 S-ABS BS4 | 1040296/A | Genuine OEM

If your Royal Enfield’s rear wheel alignment is drifting or your chain adjustment won’t hold properly, a worn/bent rear wheel adjuster block is a common cause. Royal Enfield 1040296/A (Adjuster RH) is the right-hand (brake-side) rear wheel adjuster, used to set chain slack and keep the axle straight—critical for stable handling, even tyre wear, and smooth braking.

This is a genuine OEM component (not a soft aftermarket casting). It’s designed to sit correctly in the swingarm slot and provide consistent adjustment under load. Hitchcocks also describes this style as a wheel adjuster with a large hole (22mm) for the brake side, which matches how many Classic rear ends are configured. 

Before ordering, confirm your bike’s side and axle/adjuster style (RH/brake side). Using the correct adjuster reduces repeat adjustments, helps your chain run true, and prevents premature sprocket/chain wear.

Key Features 

• Genuine Royal Enfield OEM part number 1040296/A 

• RH / brake-side rear wheel adjuster (alignment + chain tension setting) 

• Hitchcocks listing notes large hole (22mm) – brake side style 

• Restores accurate axle alignment (reduces “pulling” & uneven chain slack)

• Helps prevent accelerated chain/sprocket wear from misalignment

• Direct replacement form-factor (match your old adjuster visually before fitment)

• Ideal during chain kit / rear tyre / axle service jobs

• Durable metal block construction (OEM spec)

Compatibility Table 

CHECK PART NUMBER BEFORE PURCHASE 

Important: Other Classic/Bullet/500 variants may use different adjuster styles. If not confirmed for your exact variant, treat as ❓ Verify Fitment and match: (1) side = RH/brake side, (2) adjuster/axle design, (3) old part stamping/shape.

Variants

• Side: RH (Brake Side) – 1040296/A (this listing) 

• Optional matching part: LH – 1040297/A (recommend listing separately or as a selectable variant if you stock it)

FAQs 

1) What does “RH adjuster” mean?
RH = Right-hand side of the motorcycle. For this part, dealer data confirms it for Classic 350 S-ABS BS4. 

2) Is this the chain adjuster block near the rear axle?
Yes—this is the rear wheel/axle adjuster block used to align the wheel and set chain slack.

3) Will it fit all Classic 350 / Bullet / Electra models?
Not confirmed. Many models look similar but can differ by axle size/adjuster style. If your model isn’t listed above, treat fitment as ❓ Verify.

4) Do I need to replace both sides?
If only one side is damaged, you can replace one. But for best alignment, many mechanics replace in pairs when both show wear/rounded edges.

5) How do I confirm before ordering?
Match your old part’s shape + side, and share your VIN/chassis year with us to double-check.