Greg Marsh Enterprises

When it absolutely must be done right and with integrity, you need Greg Marsh Enterprises. Our motto, promise, mission, and ethic is: Satisfaction Guaranteed!


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Special Parts
Updated 04/03/24

Customer Combat
Build Oct 23

Updated 05/11/24

1975 Norton Wiring
Updated 05/22/24

Combat 5
Updated 04/04/24

Roadster 850
Updated 04/03/24

Blue 69S
Delivered 05/17/24

High Mileage 850
Delivered 03/26/24

Mk3 Engine & Gearbox
Delivered 03/07/23

1973 Customer
BasketCase Build

Delivered 07/15/22

1974 Norton 850
Commando Rebuild

Sold 01/12/21
Updated 06/10/21

Customer Combat
Delivered 09/07/20

1974 Norton Wiring
Completed 07/27/20

1972 Norton 750
Commando Rebuild

Completed 05/15/19
First Place Norton 05/16/19
Sold 01/01/20

1972 Norton Wiring
Completed 07/19/18

Customer Combat
and 69S Builds

Closed 10/18/23

US FlagThursday, May 23, 2024
A popular upgrade combination from Colorado Norton Works for pre-MKIII Commandos is the Electric Start and 520 Final Drive Conversion. Besides getting the preeminent electric starter including belt drive, you’ll get a high quality 520 X-Ring chain which ends clearance problems and makes your chain nearly maintenance free.

For those able to bring/ship their bike to us, we have a special deal. We'll install both kits, take the removed parts in trade, and charge you very little more than it would cost you to get the parts.

cNw offers several options and upgrades which you can choose at cost – see the second section below.

While your bike is with us, we can offer additional options – see the third section below.

Call Greg at 703-200-4025 for more info or to arrange to be upgraded.  With lead times ordering parts, it's best to get this done outside the riding season! The cNw e-start kit can take up to six weeks to arrive if we don't have the specific one you want in stock. Everything else is quick to arrive if we're out of stock.

cNw Electric Start, Satin Inner Primary, Black or Chrome Starter $2495.00
Barnett Clutch Pack, Complete Kit $186.85
cNw 520 X-Ring Final Drive, Cush Drive Hub $589.95
AGM Battery (local purchase) $80.00
Shipping (approximate) $60.00
Total buying the parts yourself $3411.80

Total us doing it (includes Sales Tax) $3810.00

cNw Options
Electric Starter Polished Inner Primary Cover $200.00
Electric Starter Anodize Inner Primary Cover $400.00
Shorai LFX18L1-BS12 Lithium Iron Battery (replaces battery above) $200.00
Bolt-up Rear Hub (older models) -$70.00
Use your current clutch pack -$100.00

GME Options (Parts & Sales Tax Included)
Install Tri-Spark Ignition $235.00
Install Tri-Spark MOSFET Regulator $125.00
Install Two Tri-Spark 6-Volt Coils $95.00
Install Lucas 3-phase stator $100.00
Install cNw Single Coil $165.00
Install our Single Coil $125.00
Install one-piece rear axle (Don Pender) $135.00
Install oil pressure switch (Don Pender) $50.00
Cleanup entire bike wiring like this $600.00

Burlen, the parent of the AMAL Carb Company    The AMAL Carb Company     Tri-Spark, inovative electrical products for the Vintage British Motorcycle     Wassell, the 70+ year old suppliers of British Motorcycle parts     cNw has become a leader in bringing new parts and improvements to the Norton motorcycle market.
Copyright © 2003-2024 Greg Marsh Enterprises
 8116 Arlington Blvd. #171, Falls Church, VA 22042, (703) 200-4025