Nico MK2 Shootbolt Gearbox uPVC Window Espag Lock 22mm Backset

Nico Centre Gearbox Shoot Bolt Window Lock 22mm Backset

Genuine Nico brand replacement gearbox – authentic OEM quality for exact-match dimensional replacement.

The Nico Centre Gearbox Shoot Bolt Window Lock is a genuine Nico-manufactured replacement component, ensuring authentic OEM quality and exact dimensional accuracy for your existing Nico window system. This gearbox is designed to fit centrally within your window frame and connects seamlessly to your existing extension shootbolt rods on either side. Critical: This genuine Nico gearbox will only fit if your existing unit matches the exact dimensions listed below – particularly the 22mm backset, 58mm gearbox length, and 43mm handle fixing centres. When your window handle feels loose or your window won't lock securely, it's typically this central gearbox that has failed – replacing it with this authentic Nico component will restore your window to full working order.

As a genuine Nico product, this like-for-like replacement gearbox is manufactured to the exact specifications and quality standards that Nico is known for. Before ordering, carefully measure your existing gearbox to confirm all dimensions match – this includes the backset (22mm), gearbox length (58mm), overall length (258mm), and handle fixing centres (43mm). This Mark 2 version features two central mushroom cams for enhanced security, though these can be safely ignored if you're upgrading from an earlier Nico system. Using authentic Nico components ensures seamless installation with your existing shoot bolts and hardware, making it a cost-effective repair solution that saves you hundreds compared to full window lock system replacement.

Key Benefits:

• Genuine Nico Brand Quality – Authentic Nico-manufactured product, not an aftermarket alternative, ensuring original equipment quality, exact specifications, and reliable performance you can trust.
• Exact Dimensional Replacement – Manufactured to precise specifications for direct replacement of Nico gearboxes with matching dimensions – verify your measurements before ordering to ensure perfect fitment.
• Cost-Effective Window Repair – Replace only the failed component rather than the entire locking system, saving money whilst maintaining your window's security and functionality.
• Compatible with Existing Hardware – Works seamlessly with your current shoot bolts and extension rods, so you're not paying for unnecessary replacement parts.
• Enhanced Security Features – Mark 2 design includes two central mushroom cams for improved anti-lift protection, whilst remaining backwards compatible with earlier Nico systems.
• Critical Dimension Verification – The 22mm backset, 58mm gearbox length, and 43mm handle fixing centres must match your existing unit exactly for proper installation and operation.
• Restores Full Functionality – Eliminates common window lock problems including loose handles, failure to engage shoot bolts, and insecure locking mechanisms.
• Authentic OEM Manufacturing – Genuine Nico factory-made component built to withstand thousands of opening and closing cycles, providing long-lasting performance that outlasts aftermarket alternatives.
• Straightforward Installation – Designed for DIY replacement with standard tools, saving you the cost of professional locksmith callouts.
• Universal uPVC Compatibility – Suitable for modern uPVC window systems where the original Nico centre gearbox has failed or worn out.

Product Specifications:

• Brand: Nico
• Backset: 22mm
• Cam Height: 7.8mm
• Overall Length: 258mm
• Gearbox Length: 58mm
• Gearbox Depth: 30mm
• Faceplate Width: 16mm
• Handle Fixing Hole Centres: 43mm
• Lock Type: Shoot Bolt Centre Gearbox
• Material: High-grade metal construction
• Version: Mark 2 (with central mushroom cams)
• Compatibility: Modern uPVC window systems with Nico locking mechanisms

CRITICAL: This gearbox is a direct replacement for units with matching dimensions only. You must verify ALL measurements on your existing gearbox before ordering – particularly the 22mm backset (from faceplate to spindle centre), 58mm gearbox length, and 43mm handle fixing centres. If your dimensions don't match exactly, this gearbox will not fit your window.

Pro Tips:

Pro Tip: Before ordering, remove your existing gearbox and use a digital calliper or accurate ruler to verify ALL dimensions match exactly – particularly the 22mm backset and 43mm handle fixing centres. Take a photo of your old gearbox with a ruler for reference, and note how the shoot bolt rods connect on each side. This preparation ensures you order the correct replacement and makes installation straightforward. After fitting, apply a small amount of silicone spray to the shoot bolt mechanism for smooth operation.

Package Contents:

• 1 × Nico Centre Gearbox Shoot Bolt Window Lock (22mm Backset)

Frequently Asked Questions:

How do I know if this gearbox will fit my window?
This is a direct replacement for Nico gearboxes with exact matching dimensions. You must measure your existing gearbox and verify that ALL dimensions match: 22mm backset, 58mm gearbox length, 258mm overall length, 30mm gearbox depth, 16mm faceplate width, and 43mm handle fixing centres. If even one measurement is different, this gearbox will not fit. We strongly recommend removing your old gearbox and checking each dimension before ordering to avoid compatibility issues.

What is the most critical measurement to verify?
The backset (22mm) is the most crucial measurement – this is the distance from the face of your window frame (where the faceplate sits) to the centre of the square spindle hole. If your backset is 20mm instead of 22mm, this gearbox will not align correctly with your window handle. The handle fixing centres (43mm) are equally important as they determine whether your existing handle will fit. Always measure twice before ordering.

Will this gearbox work with my existing shoot bolts and extension rods?
Yes, provided your dimensions match exactly, this centre gearbox is designed to connect directly with your existing Nico shoot bolt rods and extension mechanisms. You won't need to replace any additional components – just the central gearbox that operates the system.

My current Nico lock doesn't have the central mushroom cams – will this still fit?
Absolutely. This genuine Nico Mark 2 version includes the two central mushroom cams for enhanced security, but these can be safely ignored if you're upgrading from an earlier Nico system. The gearbox is fully backwards compatible with earlier Nico models, provided all dimensions match.

Is this a genuine Nico product or an aftermarket alternative?
This is a 100% genuine Nico-manufactured gearbox, not an aftermarket copy or compatible alternative. You're getting authentic OEM (Original Equipment Manufacturer) quality with exact specifications, superior materials, and the reliability that Nico's reputation is built upon. Genuine Nico parts ensure perfect compatibility and longevity that aftermarket alternatives often cannot match.

What are the signs that my centre gearbox needs replacing?
Common indicators include: window handle feeling loose or wobbly, handle turning but shoot bolts not engaging, difficulty locking the window securely, or the handle spinning freely without resistance. These symptoms typically mean the internal gearbox mechanism has worn or failed.

Can I install this myself or do I need a professional?
This is a straightforward DIY replacement for anyone comfortable with basic hand tools. You'll need to remove the window handle, unscrew the old gearbox, disconnect the shoot bolt rods, install the new gearbox, reconnect the rods, and refit the handle. The entire process typically takes 15-30 minutes per window.

Why Choose This Genuine Nico Centre Gearbox?

When your uPVC window lock fails, choosing a genuine Nico replacement gearbox guarantees authentic OEM quality and exact dimensional accuracy – not a generic aftermarket alternative that might compromise performance or durability. This is the same factory-made component that was originally fitted to your window system, manufactured to Nico's exacting standards for precision and reliability. By carefully verifying your existing gearbox dimensions match the specifications listed above, you're ensuring a perfect fit that restores full functionality at a fraction of the cost of complete lock system replacement. This is the authentic Nico component that professional window fitters specify for guaranteed compatibility and long-lasting performance. Don't risk ordering incorrect aftermarket parts or compromise your home security with untested alternatives – choose the genuine Nico replacement that guarantees seamless installation with your existing hardware and delivers the original equipment quality and reliable performance you expect for years to come.