Since 1977

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MOTOCROSS TWINSHOCKS/EVOLUTION SERIES

The Falcon Grasstrack and Longtrack suspension systems are based on the 32 mm bore Motocross shock absorbers. The dampers are gas assisted and are built with high tensile hard-chromed damper piston rods to help resist stone damage, and polyurethane seals, which are more wear and damage resistant than an ordinary rubber seals.

The shock lengths from standard vary from 12.4" centres (315.0 mm) centres to 14.4in. (366.0 mm) and use 3in. of travel. The damper piston is specially designed to enable the damper to travel at high speed, necessary in grasstrack and longtrack suspension.

The dampers are built to order to suit individual designs and rider requirements. Springs are available from 50lb/in. up to 150lb/in. in steps of 10lb/in. This range is suitable for all weights of rider, from schoolboy up to the heaviest adult. The range of steel shocks is available with powder coated satin black bodies and springs, with a three Months parts and workmanship guarantee.

Most sizes are available in lightweight aluminium, saving almost 1.5lb. over the steel shocks. These are finished in clear anodising and powder coated satin black springs.

 

THE 1975 - 1984 RANGE CURRENTLY AVAILABLE

Make
Year

Model

Shock Length
(mm)*

Spring Rate
(lb/inch)*

Bolt Fixings
(mm)*

ARMSTRONG

       
  MT 500 445 T170 / M150 12x21

BULTACO

       
1976 PURSANG MK9 376 T170 / M150 10x24
1977 PURSANG MK10 376 T170 / M150 10x24
1978 PURSANG MK11 376 T215 / M170 10x24
1979 PURSANG MK12 387 T215 / M170 10x24
1980 PURSANG MK12 387 T215 / M170 10x24

CCM

       
1978 500 380 T215 / M170 8x24
1979 500 380 T215 / M170 8x24
1980 500 407 T215 / M155 8x24
1981 500 410 T215 / M170 8x24

HONDA

       
1978 CR250 445 T180 / M110 10x19
1979 CR250 445 T180 / M110 10x19
1980 CR250 445 T180 / M110 10x19
1980 CR125 445 T180 / M130 10x19

J B R HONDA

       
1980 500 420 T250 / M200 8x20

CURTIS HONDA

       
1980 500 395 T230 / M200 10x24

HARLEY DAVIDSON

       
  MT350 432 T200 / M170 12x21

HUSQVARNA

       
1977 250/390 395 T200 / M170 8x22
1978 250/390 395 T180 / M150 8x22
1979 390/250 420 T230 / M200 8x22
1981 250/420 438 T170 / M150 12x20
1982 250/420 458 T230 / M170 T12x24 & B8x22
1983/84 250/500/510 473 T330 / M290 12x20

KAWASAKI

       
1979 KX 250, A5, 2 stroke 445/460 T180 / M110 8x22
1980 KLX 250 4 stroke B1 & B2 460 T130 / M100 8x22
1981/82 KLX 250 4 stroke 460 T290 / M170 10x22

KRAMER

       
1979 250 402   8x24
1980 250 415   8x24

KTM

       
1978 400 MC5 385 T250 / M230 8x22
1979 125/250/420 395 T220 / M190 8x22
1980 125/250/420 390 T220 / M190 8x22
1980 250/420 352 T290 / M230 8x22
1981 250/420 415 T215 / M200 8x22

MAICO

       
1978 250/400/440 380 T290 / M170 8x22
1979 250/400/440 380 T290 / M170 8x24
1980 250/400/440 387 T215 / M190 8x24
1981 250/400/490 380 T230 / M170 8x24

MONTESA

       
1978 VB250 387 T170 / M170 12x24
Cappra 414   T200 / M150  

SUZUKI

       
1979/80 RM250/400 N & T 395 T200 / M170 8x24

SWM

       
1978 250 Enduro 380 T230 / M170 8x24
1982 250 390 T290 / M190 T10x24 & B8x24

VILLA

       
1979 CR250 425 (140 Travel) T290 / M140 8x22

YAMAHA

       
1978/79 HL500 382 T170 / M140 10x22
1978 XT500 400 T230 / M170 10x22
* Unless otherwise stated
All suggested spring rates correspond to a rider weight of approx 76 Kg (12St).
It will be necessary to change the spring rate for heavier or lighter riders.

 

SHOCKS FOR SPECIAL TWINSHOCK MOTOCROSS BIKES

We are increasingly being asked to supply shock absorbers for special twinshock motocross bikes. These usually take the form of a monoshock bikes converted for twinshocks or non standard swinging arms being fitted to existing twinshock machines.
 

TO ANY BIKE, THE FITTING OF NEW SHOCK ABSORBERS, THE ONUS IS ON THE BIKE OWNER TO ENSURE THAT THERE IS SUFFICIENT CLEARANCE AROUND THE SHOCK ABSORBERS OVER THE FULL TRAVEL OF THE REAR SUSPENSION.
 

THERE SHOULD BE CLEARANCE BETWEEN THE FRAME, SWINGING ARM, AIR BOX, AND EXHAUST SYSTEMS. IT SHOULD BE NOTED THAT BIKES LIKE THE HONDA CR 250 RED ROCKET 1978/79 REQUIRE MODIFICATIONS TO THE TOP SHOCK MOUNTINGS TO CLEAR PIGGYBACK SHOCK BRACKET.
 

FAILURE TO CHECK CLEARANCES WILL RESULT IN DAMAGE TO THE SHOCK ABSORBER. ANY DAMAGE CAUSED BY INSUFFICIENT CLEARANCE ON THE BIKE IS NOT COVERED BY OUR GUARANTEE.
 

A good way of checking for clearance is to fit the shock absorbers without the springs and move the back wheel through it full travel. If in doubt please contact the factory

 

FALCON SPRINGS FOR TWIN SHOCKS

Our range of stock springs will also fit Corte Cosso and Ohlin shocks
(see charts below for details).

We also supply the spring separators that locate the top and
Main springs together and act as a guide on the shock absorber body

 

Top Springs

90mm Long x 46mm Inside Diameter
130lb/inch 230lb/inch 330lb/inch
160lb/inch 250lb/inch 380lb/inch
180lb/inch 270lb/inch  
200lb/inch 290lb/inch  
 

Main Springs

220mm Long x 46mm Inside Diameter
150lb/inch 200lb/inch 270lb/inch
170lb/inch 240lb/inch 290lb/inch
 
265mm Long x 46mm Inside Diameter
60lb/inch 90lb/inch 140lb/inch
70lb/inch 100lb/inch  
80lb/inch 110lb/inch  

It will be necessary to change the spring rate for heavier or lighter riders. Special shocks and springs can be made to order. Please telephone to discuss the details of your order.

 

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