Welcome to Monarch Stags Performance Parts!

Welcome to my website and thanks for your interest. I hope that you will find what you are looking for in my comprehensive range of performance parts for Triumph Stags. Do please phone me or click on e-mail (below) if you would like to discuss your requirements with me or need any advice. I look forward to hearing from you soon.


Brake calipers, performance pads, discs, brake disc conversion kit, servo conversion kit,


Shock absorbers, hubs, steering racks, track-control, bushes, power steering,


Drive shafts, bearings, propshafts, differential conversion kits, exchange hubs,


Alloy wheels, 5-spoke wheels, competition wheels, rally wheels, aluminium ingot or billet wheels,

Stag Engines

Shock absorbers, hubs, steering racks, track-control, bushes, power steering,


Ignition kit, exhaust manifolds, mounting brackets, sumps, hoses, petrol pumps, steering pumps


The Monarch Stag moves home

... Read more

Modified Stags :- Jonathan Finnis, founder of Monarch's Point of View

I read Tony Hart's article, ... Read more

Pitch, Wallow and Twitch

Pitch, Wallow and Twitch may sound like a firm of comic lawyers in a Christmas pantomime, but to owners of Triumph Stags and their similarly suspended brethren,... Read more

Email Responses

We endevour to answer all emails within 24 hours unless it is a long list of recommendations etc it would be useful if a contact telephone number is supplied as particularly with some overseas emails on work email addresses our replies are sometimes blocked so we have no way of informing customers we have already replied.

If you have not recieved a reply in a day or two we have probably not recieved your mail.

For our full contact details or to send an email via our contact form please go to the contact us page.

New revised BMW rear end transplant

New revised BMW rear end transplant

The BMW rear end conversion allows the use of more powerful engines with the use of a much stronger differential with the added bonus of CV jointed driveshafts which eliminates spline lock & the rear end “twitch & rear disc brakes. The conversion has been modified to give fore/aft adjustment & also spring seat modification to allow better spring positioning. The real benefit is the elimination of the large camber change seen with the standard Stag rear end giving much grip & traction. For more information please visit the Transmission page.