Smoothing out the vibes and reducing the stress on the motor is the best thing you can do for your Norton.
Street bikes are more pleasant to ride and racers have a new advantage.
Highest quality lightweight forged pistons, bullet proof Steel Carrillo rod and high strength .708" DLC coated VAR 9310 pin are shown above. Pistons and rods are designed to fit right in without requiring any other modifications other than possible crank balancing (balancing may not be necessary with Carrillo rods - see crank balance link.
NORTON RODS AND PISTONS
The piston deck is shorter than stock pistons so they require a longer rod (6.400"). Top quality Carrillo rods are presently available.
The lightweight pistons are presently available in standard 750cc 73mm bore and oversizes in 1/2mm steps with original stock compression and also Hi compression/big valve pockets. 850 pistons are presently available in standard 77 mm bore and oversizes in 1/2mm steps with original stock compression and Hi compression/big valve pockets. 920 cc pistons and other special sizes are also available. Be sure to thoroughly read the "details" link below so you know what you're getting. Call me at 559 875 0659 (9-5 California time) to ask questions and purchase in person.
These lightweight pistons & pins are approx 1/3 lighter than stock components. The longer rods have less "snap" when they reverse direction and that also helps to reduce vibration for an approximate 1/3 total reduction of destructive shaking forces. Your motor will run smoother, be more reliable and produce more power. Rebalancing should not be necessary (see details link below about balancing and power increase).
The new rod only weighs 105 grams on the small end. This specially designed rod is lighter and stronger than other steel or aluminum aftermarket rods. It is also lighter than standard Norton Carrillo rods (see piston & rod details link). The whole idea is to remove vibration and stress from your motor without sacrificing strength.
GO HERE TO SEE THE FIRST TEST BIKE with these rods and pistons.
SEE DEMO VIDEO
GO HERE TO SEE CRANKSHAFT BALANCE SPECS
Prices
Prices are listed below. The Carrillo steel rods are expensive because they are custom made. Note that these specially designed Carrillo rods are proprietary - they are only available through me and not directly through Carrillo. Even if you could buy directly from Carrillo, your cost would be about the same anyway because I buy in quantity and my profit margin is very small in order to save you money. The bushless steel rods require 18mm DLC coated pins. Note that the DLC pin coating has added to the cost of a pair of piston sets.
CAMS AND LIFTERBLOCKS FOR USING LIGHTWEIGHT BSA RADIUSED LIFTERS
Allow higher RPM and reduced stress because BSA lifters are 1/3 lighter than the original Norton lifters.
GO HERE FOR DETAILS ABOUT LIFTER BLOCKS FOR LIGHTWEIGHT BSA LIFTERS and BSA cam lobes on Norton camshafts.
CREDIT CARD SHOPPERS CAN USE THE SHOPPING CART BUTTONS
| ALL INTERNATIONAL ORDERS REQUIRE A PHONE NUMBER FOR SHIPPING |
| Some piston sizes may by out of stock and require 3-4 week delivery (call or email me) |
| PISTON AND ROD ORDERS TO EUROPE ETC MUST ADD $40 FOR THE WEIGHT.
Be sure to provide your phone number | $40
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| PISTON AND ROD ORDERS TO CANADA MUST ADD $10 FOR THE WEIGHT.
Be sure to provide your phone number | $10
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| Lightweight Norton pistons, rings, clips and .708" DLC coated pins for 750s, 850s and 920s. Specify size and Compression ratio. You must order
6.4" rods or your pistons will not fit. Call for special sizes & higher compression. |
$435 for pair
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| Lighten your pistons even further (approx 15 grams each piston) by 3 dimensional undermilling of the crown around the valve pockets and chamfering the wrist pin bosses. This is an option and additional cost to a piston set. | $90 to reduce weight of two pistons. (added to your ring/piston set).
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Gapless overlapping 2nd groove rings for perfect compression and sealing for 750s, 850s and 920s. This is an option and additional cost to a full ring/piston set. You cannot purchase individual rings. Specify size. |
$50 to fit 2 pistons (added to your ring/piston set). For my pistons only.
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| Top quality 6.4" Carrillo/Norton rods. You must order these rods or your pistons will not fit. You must use .708" DLC coated pins with these bushless steel rods. |
$690 for pair of 6.4" length long stroke rods (standard 89mm stroke).
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| Custom length top quality 6.57" Carrillo/Norton rods for short stroke motors only (80.4 stroke). For my short/light weight pistons only. You must use .708" DLC coated pins with these bushless steel rods. | $725 for pair of 6.57" length short stroke rods (special racing 80.4mm stroke).
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.021" thick Copper base gasket for Norton 750, 850 and 920 twins. | $30
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Copper Head gasket for Norton twins. | $30
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Norton race manual | $20 | |||
Norton monoshock racing frame plans | $10 | |||
One piece aluminum rocker spindle covers | $40 | |||
Complete radius cam kit including cam, lightweight BSA lifters, shorter pushrods, bronze lifter blocks. YOU MUST SEND ME YOUR CAM FOR EXCHANGE. See camshaft webpage. Call to special order stage 3 cam. Cam core unecessary for stage 4 cam.    | $745 YOU MUST SEND ME YOUR CAM FOR EXCHANGE | |||
| Bronze lifter blocks for lightweight BSA lifters - requires BSA cam lobes on Norton cam | $150 | |||
| Radius cam for lightweight BSA radiused lifters. EXCHANGE ONLY. See camshaft webpage. Call to special order stage 3 cam. Cam core exchange unesessary for stage 4 cam. Stage 3&4 cams require 7/8 radius lifters (special order). | $345 EXCHANGE ONLY. | |||
| Reconditioned/resurfaced lightweight genuine original BSA radiused lifters, required for Norton cam with BSA cam lobes (beware of low quality aftermarket lifters that come apart). | $175 for set of 4 (limited supply) | |||
| 3/8" Shorter Norton pushrods, required for Norton cam with BSA cam lobes | $85 for set of 4
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| PISTON AND ROD ORDERS TO EUROPE ETC MUST ADD $40 FOR THE WEIGHT
Be sure to provide your phone number | $40
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| PISTON AND ROD ORDERS TO CANADA MUST ADD $10 FOR THE WEIGHT
Be sure to provide your phone number | $10
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| SEE YOUR CURRENT ORDER | SEE YOUR CURRENT ORDER All international orders require a phone number for shipping |
NORTON RACE MANUALS AVAILABLE.
CLICK FOR LARGER PHOTO
A must for every Norton racer - Novice or expert. This manual contains priceless info gleaned from some of the greatest tuners of our time including notes from Peter Williams, Ron Wood, Leo Goff and many others. Twelve 8x11" pages of text. Eleven pages of illustrations and text. Three pages of photos. Subject material includes crankshaft lightening, reshaping and balancing (how to balance your own crank). Strengthening of crank PTO shaft (very important). Detailed porting specs for three stages of tune. Exhaust pipe and megaphone specs for various states of tune. Making and fitting your own big valves (1mm oversize). Racing cam specs for Norton factory cams, C.R.Axtell cams's and other high performance cams. Piston and pin lightening. Handling/suspension improvements for Norton forks. Photos of rear monoshock layouts (racing frame) and much more. Order now and make your bike a winner.