Series B,C and D Parts

*****We stock all Vincent spares A,B,C,D. Call or email for prices*****

Below are just some of the specialist parts we make. Give us a call and let us help keep you on the road.

We can also ship worldwide Email:

Please note all prices are subject to post/courier cost.

Vincent Centre Stands

Vincent Centre stands available for singles and twins

The kit includes the spring.


£225 plus vat and post

Bar turned nuts made from high quality stainless steel

91ss 1/4 BSF £1.05 each plus vat

142SS 5/16BSF £1.20 each plus vat

198SS 3/8BSF £1.30 each plus vat

We stock all fasteners in stainless steel


We carry stock of all cables throttle/air, clutch, valve lifter and brake cables.

£ P.O.A

ET21AS Cylinder muff and liner assembly (see Series A page for pre war barrels)

Pre war muff and liner assembly bored, honed and drilled.

£275 plus vat

Oil Tank Bolt and Nut FT125ss/FT126ss

Manufactured from good quality stainless steel here at Conway Motors

£12 plus vat per bolt with nut

Honda Clutch Conversion

Conways Honda clutch is a replacement unit for you Burman clutch, to fit post war comet and Pre war Comet and Rapide. The unit is supplied with all parts needed to fit and full fitting instructions.


ET33 and ET34 Valves

We have in stock ET33 and ET34 ready to ship

£40 plus VAT

Rear Frame Member Series B (Short)/C (Long)

Vincent Rear Frame Member.

Fully machined and brazed in house by Conway Motors

£1800 plus vat

Series B/C Oil Tank

Vincent Oil Tank, drilled ready to fit to any head lug, made in house by Conway Motors

£925 plus vat

Twin Kick Start Crank G76


Vincent twin kick starts arm

£400 plus vat 

One Piece Billet Aluminium Barrels

barrel 1 barrel 2

Our new billet aluminium barrels are 90mm bore and come ready Nikasil coated.

Please call or email for prices

Grosset Electric Starter

Sterter 2 Starter 1

The Grosset electric starter can be supplied as a kit or fitted by us here at Conways.

A fantastic addition to your bike, will give you that little bit of help when you need it.

Hidden under the bike, this starter does not affect the look of your Vincent! Powered with a Lithium-ion battery, your bike will fire into life at the touch of a button.

(Please note that the price does not include a battery).

Kit only £1850 plus vat

Supply and fit £2900 plus vat

Twin Steady Plate ET161

Cam Plate

Made from good quality Aluminium

£45 plus vat

Anti-Sumping Valve A65V


Our in -house made Anti-Sumping valve will stop your Vincent wet sumping. Supplied with ferrules and full instructions making it easy to fit. For use on Pre and Post war bikes.

£55 plus vat

Forged Omega Pistons 7.3:1 and 8.0:1 STD


We have Omega forged piston in stock and ready for immediate delivery.

£145 plus vat

Vincent Post war Heads Front and Rear

head5 head6 head8 head7

Cylinder heads to fit post war Vincents. Complete with valve seats fitted and single spark plug hole.

**Please note that all cylinder heads can be supplied with sealed guides, double spark plug hole or as a complete assembly to your requirements (please call for prices)

Front head £925  plus vat

Rear Head £975 plus vat

Complete Head assembled inc seats, guides valves, springs and rockers  (less inspection caps)

Front head £1575 plus vat

Rear Head £1625 plus vat

Vincent Comet Flywheels


Vincent Comet Flywheels (instock)

**Can be supplied with main shafts or as a full assembly (please call for prices)

£600 plus vat

Oil Tank ‘Manhole’ Inspection Cap


This permanent oil tank Inspection Manhole is great for helping to clean out old oil. This can be fitted using a hole saw and a welder. We can supply as a kit or alternatively we can fit it for you!

£80 plus vat

£185 plus VAT (Supplied, Fitted and fully cleaned)

Exhaust Thread Repair


We can repair any old worn out or cross threaded exhaust threads by replacing them with this insert machined and fitted in our workshop.

£90 plus vat