• Opening Hours.
    Closed All Day (UK)
  • United Kingdom.
    01772 32 33 33
  • International.
    0044 1772 32 33 33

CUSTOMER NOTICE: WE ARE CLOSED on Mondays and Tuesdays. All orders will ship Wednesday to Friday. Phones, and email, will also only operate on these days. If you need to contact us about an order, or anything else, you can use our WhatsApp number: 07985497351

TNN Engineering Top Cap

Product code: 14146

$12.95

In stock

TNN Engineering Top Cap

New to Tarty Bikes, the TNN Top Cap!

- Super light CNC aluminium top cap from TNN!
- Fits all 1 1/8" stems with flat tops.
- Recessed centre hole for use with standard M5 cap head bolts.
- Outer edge groove to help centre the cap on installation.
- Sold singly.
- Weight: 3.4g!

Additional Information

The TNN top cap has a deep profile, measuring 10.8mm from the underside edge to top outer edge. Make sure there is adequate clearance between the bottom of the cap and top of the star nut to avoid them touching and preventing correct preloading of the headset bearings. The cap is designed for use ONLY with standard cap head M5 bolts.

Questions

Daniel

Are the slots large enough to feed a hydraulic brake housing through?

Posted by Daniel

Reply from TartyBikes

Hi Daniel

That is a good question! The answer is yes, they are. Having checked, all brake hoses and cable with fit through nicely. Although, you will need to remove the shroud nut / shroud cover before doing so.

Ben

Reviews

Write a review

Not yet rated

People who bought this also bought…

Halo Single Speed Spacer Kit

Product code: 14261

£15.00

£15.00

  • Ideal for use with the latest generation of HG spline S/S hubs, including Hope Pro 5 and Industry Nine Hydra hubs!
  • Perfect for standard HG spline hubs and cranks too!

£15.00

Out of stock Out of stock

Stock reminder

Out of stock

Out of stock

TartyBikes RD Hybrid Tensioner

Product code: 14301

£35.00

100%

£35.00

  • Affordable, useful, and durable. The RD range of products!
  • Designed by Tarty Bikes founder Adam Read, and tested by us.
  • All the benefits of a fixed and spring tensioner combined!

£35.00

In stock In stock

View options

In stock

In stock

Inspired Team Alloy Splined Sprocket

Product code: 14272

£36.00

£36.00

  • As used by Inspired Team riders John Langlois, Ben Travis and Jack Heard!
  • Super light weight, strong and durable construction.

£36.00

In stock In stock

Add to basket

In stock

In stock

  • © TartyBikes Ltd, 2026
  • Tel. (UK). 01772 32 33 33
  • Tel. (Intl). 0044 1772 32 33 33

TartyBikes Ltd, Units 3-4, Club Street, Bamber Bridge, Preston, PR5 6FN

  • Company No. 6131482
  • VAT. GB 860 0270 59

Web Design & Development by tame

Top

Worldwide Delivery Available

We can deliver to United States and many other countries. Click here for further info.