THOR LAWSON'S
VINTAGE and EVOLUTION SUSPENSION PRODUCTS

SIMONS FORK PARTS

A customer and friend has made 9" travel damper rods for his 12" Simons and custom 45 & 90 degree air caps, contact Lloyd at LPRACING77@aol.com.
 90 degree Simons cap made by Lloyd Patterson Racing.

CR axle and brake stay that I recently made for a customer.

SimonsSealKit.JPG (189681 bytes) SIMONS FORK SEAL KIT*- consist of 2 Seals, 2 Wipers, 2 Bottom Cap O-rings, and 2 O-rings for the air caps.
* I don't mind doing exchanges if you order the wrong set, provided they are not damaged.  If you have never had your forks apart before, please disassemble one and see what you have and save yourself time and postage.  Don't assume.... from the top, the 1/4" and 3/8" appear the same.  However, the 50mm conventional canned oil seal is readily viewable from the top and is held in by a circlip.

Left-pneumatic seal/wiper leg, Right-conventional 50mm oil seal leg. Photo of a leg using pneumatic seal/wiper on left, conventional canned oil seal leg on right.

 


 FREE Simons documents:  (Specs and tips on Simons)  (Not sure which way the seal/wiper goes in?  Click here for JPG diagram)
Normal setup is 5wt oil at 6" starting at 15 psi.

SIMONS 1/4" REBUILD PACKAGE,  1/4" Seal Kit, Orange Decal Set (or Yellow by request), and the Manual at 50% off. #909-510A,  $34.50

SIMONS 3/8" REBUILD PACKAGE,  3/8" Seal Kit, Orange Decal Set (or Yellow by request), and the Manual at 50% off. #909-510B,  $34.50

1/4" Seal Height for Forks with Aluminum Lower Legs, fits early to late 70's, most commonly produced, the weight of one leg is 2 lbs and 5-1/2 oz. #909-510,  $24

3/8" Seal Height for Forks with Magnesium Lower Legs, ultra light legs used in the late 70's, limited production, the weight of one leg is app. 1 lb and 7 oz. #909-511,  $24
SIMONS 50mm FORK SEAL KIT utilizing a OEM style seal retained by a snap ring.  O.D. of seal is 50mm, kit consists of 2 Seals, 2 Bottom Cap O-rings, and 2 Air Cap O-rings.   #909-512,  $26

SIMONS 50mm SNAP RING SET,  #909-585,  $3.95 pair

SIMONS PISTON RING SET,  #11-132,  $24 pair

SIMONS BOLT SET, complete set of 20x Allen bolts and 4x nuts for steering and axle clamps, zinc plated . #909-524,  $22

SIMONS AXLE & spacer-nut, Honda CR125R & CR250R ,  #11-155-04,  $110.00

SIMONS BRAKE STAY with spacer & hardware, Honda CR125R & CR250R ,  #11-166-01,  $60

NEW!! SIMONS T-Stem Nut, CR125&250R with Simons Stem, 1"x20 thread, #11-202,  $55
 

NEW!! SIMONS T-Stem Nut, CR250R with stock Honda Stem, 24mm x 1.0 thread, #11-202,  $65
 

NEW!! SIMONS FORK SPRINGS, 26" length, 6.1 lb or .11 kg/mm rate #11-177,  $140 set of 2
 

SIMONS NEGATIVE REBOUND SPRINGS, goes around the damper rod in the lower legs and eliminates harsh rebounds and makes for a softer ride on the small stuff. #11-173,  $35 set of 2
 

SIMONS STEERING STOP, stainless steel, #11-159,  $15.00 each
 

SIMONS SNAP RING for Air Caps, zinc plated,  Set of 2, #909-580,  $4.00 set
 

SIMONS SNAP RING for Damper Valve, black phosphate coated,  Set of 2, #909-581,  $3.00 set
 

Simons Manual, scanned & printed from the original, covers installation, maintenance, tuning, machining blueprints for CR250R brake panel and steering nut modification.   #909-501,  $9


 

SIMONS FORK STICKERS, Orange, from Vintage Factory, Set of 2, #999-530,  $6 pair

SIMONS FORK STICKERS, Yellow, from Vintage Factory, Set of 2, #999-531,  $6 pair

SIMONS UDX-60, majority of the UDX-60's use seals with a 67mm OD, recently a customer reported a set with a 68mm OD, whether by design or modified is undetermined at this time. 

 SIMONS UDX-60 Fork Seals, 50x67mm, Set of 2, #909-513,  $18 pair
 

 SIMONS UDX-60 Fork Seals, 50x68mm, Set of 2, #909-518,  $22 pair
 

 SIMONS UDX-60 Wipers, 50x68mm, this is a single lip seal that is installed inverted to serve as a scraper, Set of 2, #909-519,  $18 pair
 

  SIMONS UDX-60 Owners Manual, scanned & printed from the original,  #909-502,  $14


 

 

Air Valves, Cores, and Caps

Air Valves, Original replacement, Nickel-Plated, 200 psi sustained, 300 psi peak, metal cap, always install with a fresh layer of plumbers tape which can be found at the local hardware store,  #09-166L8,  $4.50 each

Standard Air Valve Cores, 200 psi sustained, 300 psi peak,  #909-054-2,  2 for $1.70
 

Original Style Nickel Plated Air Caps, long skirt for easy threading, o-ring seal,  #909-056-2,  2 for $1.40 
Chrome Hex Air Caps, fiber ring seal,  #909-055-2,  2 for $1
 

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