Skip to content
Our catalog is growing fast. Browse what's here now, and check back soon for new parts and improvements.

Tru-Lock Tail Piece for Kwikset Deadbolt Cylinders

SKU: 40126

no price message test
  • Type: Tail piece (keytail) for deadbolt cylinders
  • Compatibility: Works with most standard Kwikset deadbolts with hollow tail piece
  • Application: Deadbolt and multipoint lock systems
  • Brand: Tru-Lock
  • Sold individually
Not sure this is the right part?
Before you order, if you'd like confidence this is the right part for your job, please call us at (816) 221-6543 .
*We have a fully-staffed customer support team happy to help!

Tru-Lock Kwikset Tail Piece (40126)

This Tru-Lock tail piece, also known as a keytail, is designed to work with Kwikset deadbolt cylinders. It provides the connection between your cylinder and the lock mechanism, allowing the key to operate the deadbolt.

This replacement tail piece is compatible with most standard Kwikset deadbolts that use a hollow tail piece design. It is suitable for use with both standalone deadbolts and multipoint lock systems that accept Kwikset cylinders.

Technical Information

  • Application: Deadbolt
  • Cylinder Compatibility: Kwikset

Sold individually.

Fill out our MPL form or call us to ensure accurate purchasing and correct fit.

Frequently Asked Questions

What is a tail piece used for?

A tail piece (or keytail) connects the cylinder to the lock mechanism, allowing the key to turn and operate the deadbolt or multipoint lock.

How do I know if this tail piece will fit my lock?

This tail piece is designed for Kwikset deadbolts with a hollow tail piece design. Check your existing cylinder to confirm it uses a Kwikset keyway and hollow tail piece configuration.

At mplocks.com, we strive to provide fast, reliable, and fairly priced shipping. Below you'll find our standard shipping details, important notes, and packing practices.

Standard Shipping Rates

Shipping applies to the contiguous U.S. (orders to Alaska and Hawaii require a custom quote):

  • $11.95 – USPS Snail Mail (First Class, 10–21 days)
  • $14.95 – USPS Priority Mail (7–10 days)
  • $17.50 – UPS Ground (2–5 business days)

📦 Rates typically cover packages up to 4 lbs. Oversized or heavier items may incur additional charges.

Processing Times

  • Most orders ship within 2–5 business days of purchase.
  • If your order is delayed, we'll notify you promptly.

Important Notes on Shipping Costs

  • Certain items may have higher shipping costs due to weight or dimensions.
  • We reserve the right to adjust shipping fees. If this applies to your order, we'll contact you for approval before proceeding.
  • If you choose not to accept revised shipping charges, we may cancel your order at our discretion.

Backorders & Billing

  • All credit cards are charged within 72 hours of purchase.
  • This includes orders that contain backordered items.

Our Packing Standards

We take great care to ensure your order arrives safely and securely.

  • Whenever possible, we use recycled paper, cardboard, and eco-friendly packaging materials.
  • Many of our products are purchased in bulk and may not include retail packaging or barcodes. In these cases, items may be repackaged in secure, plain boxes.
  • Hardware ships in retail or contractor-grade packaging when available.
  • Every item is inspected prior to shipping, and additional packing is used if needed.

Quality Guarantee

All items are brand new unless specifically noted. If something is not right, we'll work to make it right—through repair or replacement.

⚠️ Please note: shipping costs are non-refundable.

If you have questions about shipping rates, timelines, or packaging, please contact us before placing your order.

Illustration of a teal building with a roof and entrance on a white background
Authorized Retailer

Ensuring Quality and Compatibility

Black silhouette of a person wearing a headset on a white background
Need Help?

Contact our support team today

American flag with stars and stripes
Veteran Owned

Committed to Service and Integrity