| Stage 1 - Dynojetting | ||
| Dynojet kit | £90.00 | |
| K & N Filter | £40.00 | |
| Typical labour price to install and set up | £100.00 | |
| Total = | £230.00 | |
| Stage 2 - Gas Flowed Head, Cams, etc. | ||
| Gas Flowed and Skimmed Head including 3 angle cut seats etc. | £300.00 | |
| Exchange Kent Cams | £160.00 | |
| Adjustable Cam Sprockets | £40.00 | |
| Gaskets | £50.00 | |
| Valve shims | £80.00 | |
| Heavy Duty Clutch Springs | £10.00 | |
| Engine work labour to strip & rebuild, dial in cams, set valve clearances, fit clutch, etc. | £500.00 | |
| Total = | £1,140.00 | |
| Stage 3- 660cc Big Bore + Above | ||
| 660cc Piston Kit | £380.00 | |
| Cylinder Boring and Honing | £120.00 | |
| Gas Flowed and Skimmed Head including 3 angle cut seats etc. | £300.00 | |
| Exchange Kent Cams | £160.00 | |
| Adjustable Cam Sprockets | £40.00 | |
| Valve shims | £80.00 | |
| Gaskets | £70.00 | |
| Heavy Duty Clutch Springs | £10.00 | |
| Engine work labour to strip & rebuild, dial in cams, set valve clearances, fit clutch, etc. | £600.00 | |
| Total = | £1,760.00 | |