1.k Norton Gearbox and Clutch Parts

1.k Norton Gearbox and Clutch Parts

1.k Norton Gearbox and Clutch Parts
SOHC Norton Gearbox and Clutch Parts

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Gearbox Bearing - Mainshaft Main Bearing : All Models - SOHC/OHV/SV

Product no.: 0029 A2/316

- Large shielded single row ball bearing. This is the main bearing fitted to all upright and laydown Norton gearbox's from the 1930's - 1950's gearbox's. 

£45.00 *
In stock

Gearbox Bearing - Mainshaft All models/Layshaft : Model 30M/40M (Manx)

Product no.: 0030 A2/321

- Single row ball bearing. Fitted to all upright and Norton laydown gearbox's mainshafts and Manx model layshafts on the right hand (timing) side.  High quality RHP brand

£29.00 *
In stock

Norton Gearbox - Left Hand Layshaft Ball Bearing

Product no.: 0031 B2/322

Single Ball Bearing to fit all Norton upgright and pre-AMC laydown gearbox drive side layshaft - high quality manufacturer

£24.00 *
In stock

Norton Upright and Pre-AMC Gearbox - Mainshaft Thrust Washer

Product no.: 0641 A2/328

Norton Upright Gearbox and Pre-AMC (i.e. laydown) gearbox - bronze mainshaft Thrust Washer 

£19.50 *
In stock

Norton Gearbox - Sleevegear/Main Bearing Oil Retaining Shim - Price Each

Product no.: 0853 A2/317

This is the large oil retaining shim that is fitted between the mainshaft sleevegear and main gearbox bearing on all upright and laydown Norton gearboxs from the 1930's to late 1950's (i.e. pre-AMC) - as per original fitment.  Price Is Each

£3.80 *
In stock

Norton Gearbox - Oil Retaining Shim: Outer Bearing (Pre-War) or Reduced OD A2/417 - Price Each

Product no.: 0854 9666

This is the oil retaining shim that was shown as fitted between the main gearbox bearing and gearbox shell on pre-war Norton spare parts list - but can also be used as an alternative to the large inner bearing shim - see detail listing for more information. Price Is Each

£3.50 *
In stock

Norton Gearbox - Selector Pawl Carrier Spacing Shim

Product no.: 0851 A2/415

This is the shim fitted behind the selector fork and rear mount plate on both Upright and Laydown gearboxs from 1930's to late 1950's. It is very important to give good smooth selection.

£2.80 *
In stock

Norton Gearbox - Selector Pawl - Front Shim (If Fitted or Required)

Product no.: 0852 Shim8

Optional Shim fitted in front of Selector Pawl - to improve slickness of gear selection (see detail listing for information) - Each

£2.80 *
In stock

Norton Gearbox Mainshaft/30M Layshaft End Shim: Set of 3 Shims

Product no.: 0405S A2/324SHS

Set of 3 different thickness shim washers to fit Norton Upright/Laydown gearbox mainshaft or the layshaft of racing gearbox's.  Useful if you have endplay or your gears are not fully in line.  Set of 3 in following sizes: 0.030”/0.018”/ 0.012", see listing for more information

 

£8.00 *
In stock

Norton Gearbox Mainshaft/30M Layshaft End Shim: Single Shim: Various Thicknesses

Product no.: 0405 A2/324Sh1

Single shim washer to fit Norton Upright/Laydown gearbox mainshaft or the layshaft of racing gearbox's.  Useful if you have endplay or your gears are not fully in line.  Available in 3 sizes: 0.030”/0.018”/ 0.012", see listing for more information

 

£2.80 *
In stock

Norton Gearbox - Gearchange Return Spring for Selector Mechanism

Product no.: 0384 A2/410

This spring is is the main return spring that fits in the gearbox selector mechanism, and it is the wear of this spring over years of use that causes it to eventually causes it to lose it's tension - which then results in changing gear becoming more haphazard and less direct. 

£7.00 *
In stock

Norton Gearbox Kickstarter Spring

Product no.: 0385 A2/367

As with the gearbox Return spring, this kickstarter spring is commonly worn on Norton gearbox's - often identifiable by the kickstarter moving backwards by its own accord on takeoff from standstill. As with the Return Spring, a good quality original used as the template to manufacture these

£7.00 *
In stock

Norton Upright Gearbox Linkage Clevis Pins+Split Pins - Pair

Product no.: 0357 A2/427

These are a modern equivelant for the clevis pins used to connect the gear linkage on Norton gearbox's between the positive stop selector mechanism and the main gearbox selector plate.  Listing is for 2 clevis pins and 2 split pins

£2.20 *
In stock

Norton Upright Gearbox Linkage Clevis Pins+Split Pins - Pack of 4

Product no.: 0357B A2/427_4

These are a modern equivelant for the clevis pins used to connect the gear linkage on Norton gearbox's between the positive stop selector mechanism and the main gearbox selector plate and often also fitted to Brake rod clevis's.  Listing is for 4 clevis pins and 4 split pins

£4.00 *
In stock

Norton Upright Gearbox - Cam Plate or Quadrant Spindle Washer - Pack of Three

Product no.: 0639 A2/346

Norton Upright Gearbox - Cam Plate or Quadrant Spindle Washer - Pack of Three:  these are the special, thick/wide pan washers used to secure the gearbox quadrant and lever arms on all Norton upright gearbox's (1933 type onwards), as well as gearbox quadrant on Laydown Norton gearbox's - Now in Stainless Steel

£3.30 *
In stock

Norton Gearbox - Sleevegear Rollers

Product no.: 0032 A2/318

Set of 13 rollers to fit all Norton pre-Amc mainshaft sleevegears (+1 spare)

£5.80 *

Upright Gearbox Cover Screws/Washers - Pair

Product no.: 0113 A11M/822
This Item listing is for a pair (i.e. two) of stainless steel cheesehead screws and red fibre washers to fit the oval shaped positive stop inspection cover on Norton upright pre-War gearbox's (both road and race gearbox's). These cheesehead screws are copied from an original gearbox screw, having a wider head than standard modern cheesehead screws. Sorry these are not cheap but are specially made for us, bar-turned from stainless rod by the same manufacturer that also makes my stainless cheesehead engine screw sets. also included is a pair of high quality red fibre washers that fit under the screws
£4.30 *

Norton Gearbox Endplate Nuts - Upright Gearbox

Product no.: 0099 A11M/307

- These are the distinctive Norton gearbox nuts as fitted to the endplate of all upright Pre-War Norton models and pre-Featherbed Manx models. Made in Stainless Steel and very pretty

£3.40 *
In stock

Norton Upright Gearbox Cover Stud - All Models

Product no.: 0100 a2/307
This is the gearbox cover stud that fits into the shell of all upright gearbox's. An original was used as a pattern, these are identical, other than being manufactured in stainless steel. 7 are fitted per gearbox. Note: This item is slightly longer than the vertical bevel stud, it is 5/16" BSC both ends and can also be used as the Inlet Stud on cylinder heads - but check the thread on your head first, sometimes these are BSW.
£2.50 *
In stock

Thin Width Gearbox and Bevel Stud Spring Washers - 5/16" (per 20)

Product no.: 0102 SW002
Used on upright Norton gearbox's, these stainless steel thin width spring washers fit under the blind nut on the front gearbox cover. When locked down, they also look identical to the original 'thin width' washers fitted under bevel casting (reduced head) nuts. They are slightly slimmer than standard 5/16" spring washers. They also have the advantage that being a spring washer, if you have not got the perfect spanner for the rear bevel nuts (which are partly obscured), this spring washer should give you more chance of ensuring the rear nuts do not loosen fully off. Sold as pack of 20 here. These washers are also standard fitment in the BS001 Bevel Stud/Nut set. (Note: we also sell normal width 5/16" washers for normal application - Item number 0509
£3.70 *

Norton Upright Gearbox Top Adjustment Bolt/Assembly Set

Product no.: 0569 GearbxAdjstSet1
£59.00 *

Upright Norton Gearbox Top Shoulder Bolt - Stainless Steel

Product no.: 0566 A2/310

This is the distinctive top should bolt that provides the top gearbox mounting for all 'upright' style Norton gearboxs (i.e. anything prior to swinging arm or Featherbed frame). The bolt is made to a high standard from high tensile stainless steel and is identical to the original item other than the material. See also items 567,568,569

£17.00 *

Norton Upright Gearbox Bolt Washer

Product no.: 0461 A11M/313W
Lasercut and then dull nickel plated washer with very wide face, this washer fits behind the large nut on top gearbox bolt nut an is useful to help spread load on upright gearbox top lug (which often snaps if frame lug worn)
£2.00 *

Norton Clutch Plates - Friction (Sureflex)

Product no.: 0253 A2/393

- High quality bonded friction plates, as fitted to all pre-commando type Norton clutch's, including all 30's-50's camshaft Norotns - These are genuine Sureflex plates, probably the best quality clutch plates for Nortons currently available. - The price shown is for one plate. If you are building a Manx clutch you will need 4 plates, while the standard roadgoing clutch was fitted with 5 plates. 

£21.50 *
In stock
can be shipped within 30 days

Norton Clutch Plates - Friction (none Sureflex)

Product no.: 0254 A2/393b
These friction clutch plates are the same fitting as the Sureflex plates, but are manufactured by my offshore 'cheap and cheerful' manufacturer (who make lots of clutch plates for all kind of British bikes). As at 2/3/14 I have not tried these myself yet, but they look well made and the friction material is bonded to the plate (as with Sureflex) and looks quite similar to the original Norton friction material in composition. In summary, if you want the best - then go sureflex, but if want to try a cheaper alternative that look to offer good value for money, then try these (I will be doing that myself shortly!)
£14.00 *

Norton Clutch Plates - Manx Type Plain (Early Type)

Product no.: 0255b A2/392M
£12.00 *

Norton Clutch Plates - Plain (Early Type)

Product no.: 0255 A2/392
- Plain clutch plates to fit earlier Norton single clutch's. These plates have inner tongues of 0.290" width - Please check you clutch before ordering, as it is not always obvious which type of clutch plate is fitted.
£9.00 *

Norton Clutch Plates - Plain (Late Type)

Product no.: 0256 A2/393L
- Plain clutch plates to fit later Norton single clutch's (normally fitted from mid 1950's onwards). These plates have inner tongues of 0.387" width - Please check you clutch before ordering, as it is not always obvious which type of clutch plate is fitted
£9.00 *
*
Recommended Retail Price, plus delivery
1 - 30 of 67 results