928/300 Amal MK1 28mm Premier Concentric Carburetter

Part Number : 928/300PREM Categories: , ,
(11 customer reviews)

£ 190.00 +VAT if applicable

928/300 Amal MK1 Premier Concentric 900 Series

In stock

5.00 out of 5
Part Number : 928/300PREM Categories: , ,

Right hand, 28mm bore Concentric Carburetter, 4 stroke..

This is the new alloy body premier carb

Fully adjustable float fitted as standard!

Main Jet: 180

Throttle Slide No.: 3

Needle Jet: 106

Suitable for

  • BSA B25/C25 1967-72
  • BSA A65 Thunderbolt 1968-70
  • Triumph TR25W 1968-70
  • Triumph TR25SS 1971-72
  • Triumph TR5T Trophy Trail/Adventurer 1973
  • Also suitable for specials requiring 28mm carbs

The Premier version of the MK1 Concentric includes all the recent upgrades such as hard anodised slide, Stay-up float, new precision engineered idle circuit and aluminium needle valve. It has also been modified to use a new design of pilot jet.

Manufacturers' Description

The 900 Series AMAL Carburetter for four stroke applications has been re-designed to improve performance and wear. The new carburetter incorporates changes in materials which reduce the rate of slide and body wear and a precision engineered idle circuit which improves the pick up performance from idle and reduces fuel consumption. The precision manufactured forged alloy, hard anodised throttle slide has a low friction surface for smoother operation and greater wear resistance. The material of the carburetter body has a “passivated” finish which resists corrosion, whilst the ethanol resistant, puncture proof StayUp float and viton tipped alloy needle valve improve control of the fuel flow.
A new easily removable pilot jet provides precise metering of the idle circuit. The jet, which is located in the opposite position to the pilot air screw, is manufactured to tight tolerances allowing it to be replaced with minimum disruption to the adjustment of the carburetter. Initially the size of the jet replicates the 622/107 pilot bush. Other sizes will be available shortly. Removal of the jet allows access to the rest of the idle circuit for servicing. The new jet cannot be fitted to earlier versions of the Mk1 Concentric.

11 reviews for 928/300 Amal MK1 28mm Premier Concentric Carburetter

  1. Guest (verified owner)

    thank you!

  2. Guest (verified owner)

    just received the carb will put it on this weekend.the service was great as usual will use again jim

  3. Ron L. (verified owner)

    Very nice carb. Better than the original with new features like anodized slide and internal parts to overcome problems with the new type of gas today.

    People are great for answering any questions you may have, and the packaging insures it arrives in great shape. Also shipping is fast. Will certainly buy other parts in the future.

    Thanks very much,


  4. Guest (verified owner)


  5. Guest (verified owner)

    Perfect service. Well done!

  6. Guest (verified owner)

    excellent service ,great product

  7. Mike S. (verified owner)

    Hi the bike is a tr25w 69-70 ,I have had this bike since 1974 ,it hasn’t ran since 1982 ,I have rebuilt the whole thing ,struggled with the old carb ,backfiring through exhaust ,or blowing back through the carb ,put the new one on and it went second kick ,no problem ,still got lots of work to do but getting there ,mike Spellman :+1:

  8. Michael P. (verified owner)

    Schnelle Lieferung , Wahre ohne Beanstandung

  9. oivind l. (verified owner)

    it works very well, many thanks for quick services.

  10. John R. (verified owner)

    Excellent service and product

  11. MR P. (verified owner)

    Asked the seller for help with my purchase which they did

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