Here's a new Duplex Primary Chain (70 Links) for the following models from BSA -

BSA

BSA C15        (249cc) (4 Stroke)     (From 1958- 67) 

(Models Include -  C15 Star, C15 SportsStar, C15 Starfire).

For Trials & Scrambler check you have 70 Links - Some of them don't.

(** Not the earlier BSA C12 249cc of 1956- 58 which was a 2 stroke with a Simplex Primary chain **)

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Chain (72 Links) for the following models from AJS -

AJS MOTORCYCLES

AJS 14        (250cc)      (**From 1962- 65**) 

AJS 14CS   (250cc)      (**From 1962- 65**) 

(** Not for earlier AJS 14 Models of 1959- 61 which used a Simplex Primary Chain of 73 or 55 Links **)

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the Rear Wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Chain (72 Links) for the following models from BSA -

BSA

BSA B44 Victor (Roadster, Enduro, Grand Prix & Special)     (441cc) (1965- 70) 

BSA B44 Shooting Star                                                               (441cc) (1965- 70) 

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Chain (78 Links) for the following models from Triumph -

TRIUMPH 

Triumph Tiger & Trophy 100, T100    (490cc)    (**From 1960- 74 **)

(T100A, T100C, T100R, T100T, T100S, T100S/S)

(Models Include T100R Twin Daytona)

(** Not for earlier Tiger 100's of 1951- 59 which used a Separate Engine & Gearbox casing (Pre-Unit) - This is for the later models where it was combined**) 

(** Not for Side Car models which use a slightly shorter chain**).

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Chain (78 Links) for the following models from Triumph -

 TRIUMPH 

Triumph 5TA    (500cc)    (** From 1959- 66 **)

(** Not for the earlier 5T model of 1950- 59 which used a Separate Engine & Gearbox casing (Pre-Unit) with a Simplex Primary Chain & Dynamo **)

(**This is for the 5TA models with combined Engine & Gearbox casing, an Alternator and a Duplex Primary Chain **) 

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Chain (84 Links) for the following models from Triumph -

TRIUMPH

Triumph 6T Thunderbird   (650cc)    (** From 63- 73**)

Triumph TR6 Trophy         (650cc)    (** From 63- 73**)

(** Models include TR6C, TR6R **)

(** Not for the earlier TR6 models of 1958- 62 which used a Separate Engine & Gearbox casing (Pre-Unit) with a Simplex Primary Chain **)

(**This is for the later TR6 models of 1963- 73 with combined Engine & Gearbox casing and a Duplex Primary Chain **) 

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the Rear Wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Drive Chain (92 Link) for the following models from Royal Enfield -

ROYAL ENFIELD

Royal Enfield Constellation 700cc       (692c) (Twin Cylinder)    (1958-  62)

Suits Solo models only - Not Sidecar models.

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Chain (70 Links) for the following models from Excelsior -

EXCELSIOR

Excelsior Talisman (244cc)     (**From 1951- 63**) 

Excelsior Talisman (328cc)     (**From 1951- 63**) 

(Not for the first year of production 1950 which used a 52 Link Primary Chain).

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Drive Chain (70 Links) for the following motorbikes from Greeves -

GREEVES

Greeves Motorcyles    (1956- 72)

 (** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the Chain that drives the Rear Wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **) 

Here's a new Duplex Primary Drive Chain (80 Link) for the following models from Lambretta -

LAMBRETTA

Lambretta  (125cc, 150cc & Some 200cc)     (1958- 71??)

(**Exact Production Years & Models uncertain - So COUNT your Links **)

Suits Lambretta SX 150cc, DL 150cc, L1 150cc, Scooterline 125cc,  Special 150cc, Jet 200cc, Pony 200cc

(Not Lambretta GP 200cc which requires 82 Links)

(Not Lambretta Vega / Luna 50cc which requires 74 Links)

You MUST count the links in your chain - Some models have 68, 74 or 82 links. 

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Drive Chain (80 Link) for the following models from BSA -

BSA

BSA A7   (497cc) (Twin Cylinder)    (1946- 54 Only **)

BSA A10 (646cc) (Twin Cylinder)    (1950- 54 Only **)

(Suits Rigid Frame or Spring Frame - But not Swing Arm Frame)

Models Include - A7 Star Twin & A10 Golden Flash.

(** Not for later BSA A7's / A10's from 1954 which had Swinging Arm suspension  **) 

Later Swinging Arm models of 1954 onwards used a Simplex Primary chain with a bigger pitch and only 67,68 or 69 links.

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Drive Chain (90 Link) for the following models from Royal Enfield -

ROYAL ENFIELD

Royal Enfield Bullet     (346cc) (Single Cylinder)    (** From 1950- 62 Only **)

Royal Enfield Bullet     (499cc) (Single Cylinder)    (** From 1950- 62 Only **)

(Swing Arm Frame).

The 500cc is different if it has a Side Car - Only 88 Links. 

(The Bullet uses 70 links from 1962 onwards - Is that the one that was made in India?)

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Here's a new Duplex Primary Chain (70 Links) for the following models from Triumph -

TRIUMPH

Triumph TR25          (249cc) (4 Stroke)     (1968- 72) 

Triumph TR25T        (249cc) (4 Stroke)     (1968- 72) 

Triumph TR25W      (249cc) (4 Stroke)     (1968- 72) 

Triumph TR25SS    (249cc) (4 Stroke)     (1968- 72) 

(Models Include Jomo & Balt ) 

(** This is NOT the same as a Triumph TRW of 1963- 66 which is a 500cc and it uses a longer 74 link chain - See My other items**) 

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Chain (70 Links) for the following models from BSA -

BSA

BSA B40      (343cc) (4 Stroke)     (From 1961- 70) 

(Models Include -  B40 Star, Sports & Enduro Star).

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Chain for the following models from BSA -

BSA

BSA B50 Victor          (441cc)      (1970- 73) 

BSA B50 Gold Star    (441cc)     (1970- 73) 

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Chain (78 Links) for the following models from Triumph -

TRIUMPH

Triumph 21                   (349cc)  (1957- 59)

Triumph 3TA                (349cc)  (1959- 66)

Triumph Tiger T90      (349cc)  (1963- 73)

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Drive Chain (90 Link) for the following models from Royal Enfield -

ROYAL ENFIELD

Royal Enfield Meteor Minor     (496c) (Twin Cylinder)    (1958-  62)

(** Not for the Meteor 700cc **)

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Drive Chain (90 Link) for the following models from Royal Enfield -

ROYAL ENFIELD

Royal Enfield 500 Twin             (496c) (Twin Cylinder)    (1950-  58)

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Drive Chain (92 Link) for the following models from Royal Enfield -

ROYAL ENFIELD

Royal Enfield Interceptor 750cc    (736cc) (Twin Cylinder)    (1962- 70)

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)

Here's a new Duplex Primary Chain (70 Links) for the following models from BSA -

BSA

BSA B25         (249cc) (4 Stroke)     (From 1968- 71) 

(Models Include -  B25 Star Fire, Fleet Star, Gold Star, Victor & C25 Barracuda).

(** A Primary Chain joins the Crankshaft to the Clutch and is normally hidden under an aluminium cover **).

(** It is NOT the chain that drives the rear wheel **).

Fitting Tip - These Chains come with a Split Link, the Head of the Split Link must be first in the direction of rotation.

(** GENERIC PICTURE **)