MANEY EXHAUST SYSTEM (RACE)
After the cylinder head, the second best place to pick up horsepower is the exhaust system. Most exhaust systems and silencers are made to fit many different bikes and are not as efficient as they should be. My exhaust is a high level two-into-one race system that I designed specifically to suit the Norton engine.
It meets UK and US racing noise requirements and has been constantly refined on the dyno since 1993.

Full system, including rubber mounts, heat shield, etc ... £880.00

Please state whether motor is inclined (Commando) or vertical (Dominator)
Full spares back up.

EXTRA SILENCER
To complement my race exhaust system I have manufactured an extra silencer that is adjustable so that even the most stringent noise levels can be met.
It is a direct replacement for my system's original reverse cone and can be fitted in minutes.
Also supplied is a blank end-plate that if needed will silence to a mere whisper.

Extra Silencer ... £140.00

MANEY ALUMINIUM BARRELS (No longer available)
A great way to save weight (5kg) and enhance engine performance due to better heat dissipation.
Since 1990, literally hundreds of races and dozens of championships have been won by racers using our cylinder barrels, proving time and time again they are the best.
My barrels come with spun cast iron liners that are bored and honed to standard sizes, and a full kit of fixing nuts bolts and studs.

Cylinder barrels 750cc, 850cc & 920cc … £789.00

Special bore sizes or deck heights please add ... £100.00

MANEY RACING CRANKCASES (No longer available)
A must for any seriously tuned Commando engine; cast from patterns I designed myself, they keep the original appearance and mounting points whilst being much stronger than any others available. For road use I can machine the drive side to accept the standard chain case.

Pair of crankcases ... £995.00

MANEY LIGHTWEIGHT CRANKSHAFT (No longer available)
Manufactured from Aircraft quality Cr-Ni-Mo alloy billet. I can supply them in various special sizes of stroke to suit all your needs.

Special stroke sizes 93mm, 83mm, 80.4mm, 75mm, 59.6mm

WEIGHT SAVING EXAMPLES
Standard Norton crankshaft--------------------22-24 pounds
One piece billet crankshaft-------------------------28 pounds
Maney lightweight crankshaft-----------------17-18 pounds
This incredible weight reduction dramatically improves acceleration, and reduces stress on the crankcases

Standard 89mm stroke crankshaft ... £1,395.00

Crankshaft balancing to your requirements ... £130.00

Special stroke requirements please add ... £100.00

RACE CAMSHAFT (No longer available)
As used in all our race engines, these are manufactured in small batches to ensure greater quality control.

Race camshaft … £195.00

Cam follower regrind, per set. (Improperly ground followers will cause premature cam wear) … £60.00

PERFORMANCE PUSHRODS
When Norton engines are run at high rpm it is very important that the pushrods are rigid and do not bend; this is the only way to control the valve, making sure it is doing what the cam designer intended. Being made from chrome molybdenum tube, my pushrods are at least 30% more rigid than aluminium, titanium and carbon fibre types. They are also lighter than standard pushrods.

Pushrods, standard and -.090" complete set … £99.00

Made to customers required length … £109.00

HIGH COMPRESSION PISTONS
In addition to genuine Norton 750/850 pistons, I am pleased to announce we can now supply top quality forged racing pistons made to my own design in the following sizes:

750cc forged racing pistons 73mm & 1mm oversize (pair) … £389.00 (No longer available)

850cc forged racing pistons 77mm & 1mm oversize (pair) ... £399.00

920cc forged racing pistons 81mm (pair) … £399.00 (No longer available)

CYLINDER HEAD GASKETS
I recommend solid copper for racing, and I am pleased to announce that I now manufacture all my own gaskets in house; they are milled to precise measurements on our CNC machining centre ensuring a perfect fit every time.    

All sizes  750cc - 850cc - 920cc - 1007cc  … £28.00 each

VALVE SPRING KITS
Racing quality valve springs, valve spring cups and titanium top collars, as used in all my engines.

Full kit … £229.00

CYLINDER HEAD WORK
When tuning Norton engines, most of the performance increase comes directly from the cylinder head. But beware, there is most definitely a right and a wrong way of doing things, and there's no substitute for experience. I can help you here, as this is my 30th year of working on Norton cylinder heads. I offer three stages of tune; each comes with NEW valve seats, valve guides and our own tuftrided race quality valves. The ports are increased and shaped to suit each different valve size. Since 2002 I have been doing all the machining work on my CNC Machining Centre, including the 3 dimensional port shapes. This has enabled me to produce exact contours that are not possible with conventional machines and hand work, using modern technology to keep my customers at the very front of the field.

Stage 1: 3mm oversize inlet valves … £790.00

Stage 2: 3mm oversize inlet valves & 3mm oversize exhaust valves ... £990.00

Stage 3: 5mm oversize inlet valves & 3mm oversize exhaust valves … £1150.00

A good donor head must be supplied. If this is not possible, we can supply donor heads. Please contact me for price and availability.

MANEY EXHAUST THREAD REPAIR
This is simply the best repair for stripped cylinder head exhaust threads. I CNC machine the old damaged portion away and thread mill a new oversize hole, into which I screw my new threaded insert in bringing it back to the original size. The insert can also be removed and replaced if required. Good news for those of you who have had bad or unsuccessful repairs done in the past. I also make and fit an oversize insert.

Repair one side ... £89.00

Repair both sides ... £159.00

VALVES
My valves are of racing quality, and are tuftrided for better wear resistance.

Inlet 3mm oversize, each ... £33.00

Inlet 5mm oversize, each … £35.00

Exhaust standard size, each … £32.00

Exhaust 3mm oversize, each ... £35.00

I no longer stock valves but customers can buy from: www.gsvalves.co.uk

MANEY BELT DRIVE SYSTEMS (No longer available)
Smoother running, lightweight, no power sapping chain and no chaincase oil leaks. These are all things that are guaranteed to improve road bikes and racers alike. I manufactured and used my first belt drive in 1984 and all these years of experience have shown me which belts are the best and how to mount the clutch bearing in steel. System includes: belt, front pulley, clutch basket & sealed bearing.

Belt drive (road) … £299.00

Belt drive (race) … £319.00

Spare 30mm belt … £36.00

Spare 40mm belt … £44.00

Spare sealed clutch bearing … £15.00

DRIVE SIDE OIL SEAL
Rubberised oil seal stops oil leaking from crankcase to chaincase. Important if a belt drive is being used, especially with an open chaincase.

Oil seal … £7.99

GEARBOX OUTRIGGER (No longer available)
A must for gearboxes running the long Commando mainshaft, which is prone to flexing. Simple to fit, uses top and bottom gearbox mountings. Must be used in conjunction with belt drives, as the inner chaincase has to be modified on standard road bikes.

Gearbox outrigger … £105.00

Spare sealed bearing … £14.98

CRANKSHAFT MOUNTED RACING IGNITION
In back to back Dyno testing, my ignition system gave 2 to 3 more horsepower than the conventionally mounted ignitions. I have also developed the ignition curve to suit the Commando motor. This is one of the best tuning modifications money can buy.

Racing ignition … £199.00

DAYTONA RACE FAIRING AND SEAT (No longer available)
I designed this bodywork especially for my trips to Daytona. It combines aerodynamic efficiency with that all-important Classic look, made in lightweight close knitted glass fibre matt.

Screen … £49.00

Top half of fairing … £149.00

Bottom half of fairing … £149.00

Seat … £89.00

MANEY CUSH DRIVE UNIT
Those of you who have had broken gearboxes will already know that every drive train needs some kind of shock absorbing device, and even though the belt in a belt drive system is made from rubber, it does not provide this service. Well, the good news is I have decided to manufacture in volume the Cush Drive Unit I have been using on all my racers since 1995. The unit bolts direct to a 4 bolt Triumph disc brake hub and features an extra bearing in the catch plate. Also, the sprockets are mounted on 8 stubs that locate into the rubbers, which means gearing changes can be made in no time! I also have a range of sprockets, 40 to 45 teeth.

Cush Drive Unit ... purchase from www.minnovationracing.co.uk

Sprockets 40 to 45 teeth ... purchase from www.minnovationracing.co.uk

BILLET INLET TRACT SOLUTIONS
Solve all those inlet tract headaches with our new billet range; no more porous ill-fitting castings or tight space issues with our cut-to-suit system.
Bore sizes 34mm & 36mm

Curved Billet Manifold ... £65.00 each

Flanged Straight Manifold ... £55.00 each

Parallel Extension Piece ... £35.00 each

OIL JUNCTION BLOCK (No longer available)
Billet machined oil junction block; a neat little addition to your bike, it does away with soldered-in pipes and gives provision for Aeroquip type fittings if required. 

Oil Junction Block … £49.00