Phone/Fax (360)563-0376 E-Mail: sales@thumperstuff.com

Review the parts listed below. Enter part numbers and prices for those items you wish to order on our printable order form, or call us direct at (360) 563-0376 between 9:30 a.m. and 4:30 p.m. PST. For details go to How To Order. Have some suggestions or comments? Go to our feedback page!

Due to the age of the bikes we sell components for, some parts may be temporarily or permanently unavailable. I am constantly in the process of updating and verifying our parts lists. I apologize for any inconvenience this may cause.

Manuals, Tools, Misc. / Engine Components / Pistons / Carburetors / Exhaust Systems & Supplies / Suspension & Frame Supplies / Brakes / Drive / Controls / Brake Lines / Electrical / Chassis & Body / Polishing

MANUALS, TOOLS, MISC.

SRX

1026
$10

1011
$24

CHAIN BREAKER: You could use a file, but it takes forever

1005
$24

DEGREE WHEEL: Made of aluminum, a "must" for setting up engines

1013
$17

MANUAL, MOTORCYCLE CARBURETOR: A practical view of the carburetor

1024
$25

MANUAL, WORKSHOP PRACTICE: Covers tools, methods and overhauls

1022
$22

RIM SAVER: Slips easily over alloy rims for changing tires, protects finish

1015
$10

RING COMPRESSOR TOOL: A simple tool to prevent damage during ring installation

1017
$15

SHOCK SPRING TOOL: Easy to use for replacing shock springs

1018
$35

ENGINE COMPONENTS

SRX

CAM SPROCKET, "VERNIER" ADJUSTABLE: 

2131
$32

CAM, PERFORMANCE, STREET, Megacycle, Needs spring kit (+ $90 or cam suitable for re-grind)

2120
$185

CAM, PERFORMANCE, RACE, Megacycle, Needs piston & spring kit  (+ $90 or cam suitable for re-grind)

2121
$185

CLUTCH FRICTION PLATE KIT, STANDARD: Equivalent to original

2161
$55

CLUTCH FRICTION PLATE KIT, BETTER Heavy duty

2162
$88

CLUTCH SPRING KIT, HEAVY DUTY: Takes a strong hand, (see "Easy Clutch" #1625)

2160
$8

CRANKCASE BREATHER, K&N: Race application

1193
$22

CYLINDER SLEEVE: Standard to + 1mm

2119
$84

GASKET SET, COMPLETE ENGINE: All the gaskets you'll need for your engine.

2140
$58

GASKET SET, TOP END: All that is required for a "top end" job.

2141
$47

GASKET, EXHAUST: Replace them every time you loosen your head-pipe

2144
$2

HEAD GASKET, SOLID COPPER, specify standard/big bore,  .040 thick

2142
$34

MAGNETIC DRAIN PLUG, Capture flakes of metal in your engine, NEW LOWER PRICE

2134
$12

OIL COOLER, RACING, LOCKHART: You need this one if you are pushing your engine hard

2187
$185

OIL FILTER, O.E. EQUIV., 6-PACK: You can't change them too often

2150
$16

OIL FILTER, BETTER QUALITY: Provides better filtration than O.E.

2151
$6

PISTONS

SRX

BORE, STOCK, mm (Ref.)>

95mm

FACTORY ORIGINALS

PISTON & RINGS, STD BORE

2137
$101

PISTON & RINGS, +.020(0.5mm)

2138
$101

PISTON & RINGS, +.040(1.0mm)

2139
$101

SRX

Size mm

Comp Ratio

BORE, STOCK, mm (Ref.)>

95mm

STD.

Includes rings, pins and clips

2110
$132

1.0mm /+.040in

Includes rings, pins and clips, req. big bore sleeve & gasket

2111
$123

SRX

Size mm

BORE, STOCK, mm (Ref.)>

95mm

STD.

-

Rings, pin, clips not included, use OEM

2112
$110

97.0 

Rings included, OEM pin/clips not included

2113
$127

97.5 

Rings included, OEM pin/clips not included

2114
$127

98.5 

Rings included, OEM pin/clips not included, req. big bore sleeve & gasket

2115
$127

RING SET, FACTORY, specify size

2109
$30

RING SET, WISCO, specify size

2109A
$25

ROD, CARRILLO: A high performance connecting rod for the racing engine

2170
$230

VALVE GUIDE SEALS (set)

2128
$12

VALVE GUIDES, HIGH PERFORMANCE (set)

2127
$64

VALVE SPRING KIT (alloy retainers)

2125
$103

VALVE SPRING KIT (titainium retainers)

2126
$180

CARBURETORS

SRX

33mm KEIHIN, DUAL ROUND SLIDE CR, with filters, some mod. required

2204
$415

35mm KEIHIN, DUAL ROUND SLIDE CR, with filters, some mod. required

2205
$460

FILTER, AIR, Generic (fit stock airbox)

2221
$18

FILTER, AIR, K&N (fit stock air box)

2210
$44

FILTER, AIR, K&N, HI-FLOW (replace stock air box) 

2212
$54

PETCOCK, REBUILD KIT .

2810
$27

DYNOJET KIT, Stage 2,filter, jets, needles & springs=approx +5-8% hp (with free-flow exhaust syst.)

2214
$63

EXHAUST SYSTEMS and SUPPLIES

SRX

EXHAUST SYSTEM, MEG-SHAPED "S/TRAPP", SRX=black with brushed stainless)

2301
$280

MUFFLER, only, MEG-SHAPED S/TRAPP, SLIP-ON, Stainless Steel (SRX="SUPERLIGHT" External Disc)

2305
$215

SUSPENSION & FRAME SUPPLIES

SRX

BEARINGS, TAPERED, STEERING STEM: Stronger that than original ball bearing.

2410
$50

FORK SEALS, O.E. EQUIV.: Make those oozing forks good as new. Price per pair

2405
$12

FORK SEALS, LOW FRICTION: Less initial drag means a smoother ride, $ per pair

2407
$25

FORK SPRING: Progressive spring rate, reduce "bottoming" Price per pair

2401
$59

FORK SPRING KIT, (springs, oil & best seals): Give that sagging front end a boost .

2450
$84

FORK TUBES (hard chromed, centerless ground)

2454
$166

SHOCK ABSORBERS

SRX

FACTORY EQUIV., "Good" quality. - not available at this time-

2418
$185

"WORKS Performance Shocks"  usually take 3 weeks

2424
$300

"KONI": "Best", top of the line. (European source, allow 6-8 weeks)

2430
$761

SPRING SELECTION for SHOCK ABSORBERS

NO.

#2

#3

BRAKES Note: "SRX" requires 2 pair at front

SRX

BRAKE PADS, FERODO FRONT or REAR

2514
$25

BRAKE PADS, SPORT/COMPETITION, SBS or EBC brand, FRONT

2516
$25

MASTER CYLINDER, REBUILD KIT, Specify front/rear.  

2531
$35

ROTOR, ONE PIECE, Front or rear, lighter & stronger than stock, price per rotor

2535
$159

SRX

Standard chain
&
sprocket data ---------->

CHAIN DATA, Size:

520

No. Links:

104

SPROCKET DATA, Front:

15

Rear:

37

CHAIN, DRIVE, O.E. TYPE: Strength similar to factory equipment.

2540
$67

CHAIN, DRIVE, HEAVY DUTY: Stronger, lasts longer.

2541
$85

CHAIN, DRIVE, O-RING, STANDARD: Strength similar to factory equipment

2542
$93

CHAIN, DRIVE, O-RING, HEAVY DUTY: Stronger, lasts longer.

2543
$108

SPROCKET, FRONT, STANDARD SIZE, STEEL

2550
$16

SPROCKET, FRONT, +1 TOOTH, STEEL, Slows the engine RPM, better mileage

2551
$16

SPROCKET, FRONT, -1 TOOTH, STEEL, Pulls better, quicker acceleration

2552
$16

SPROCKET, REAR, STANDARD SIZE, ALUMINUM

2553
$37

SPROCKET, REAR, +2 TEETH, ALUM., Pulls better, quicker acceleration

2554
$37

SPROCKET, REAR, -2 TEETH, ALUM., Slows engine RPM, better mileage

2555
$37

CHAIN & SPROCKET KIT, O-RING, "D.I.D." Gold chain,(520 SR frt 15-17t, rr 39-46t

2926
$155

Note: Selected chains are appropriate to engine displacement and horsepower, per chain manufacturers recommendations.  All chains are provided with extra links to accommodate various ratios, therefore a chain-breaker will be helpful.

CONTROLS

SRX

"EASY CLUTCH": Adds mechanical advantange, pulls heavy duty springs easier

1625
$36

GRIPS, WRIST SAVER, Soft molded palm "blade" for relaxed grip

1608
$9

LEVER, CLUTCH

2620
$8

LEVER, FRONT BRAKE

2621
$8

BRAIDED STAINLESS STEEL BRAKE LINES

SRX

BRAKE LINE, FRONT,  BRAIDED STAINLESS STEEL (one piece)

2506
$84

BRAKE LINE, REAR, BRAIDED STAINLESS STEEL

2505
$38

ELECTRICAL

SRX

BATTERY ACID CATCH TANK: Keep battery acid off of your paint and frame

1705
$6

TURN SIGNALS (O.E. EQUIV.) Price each

2720
$23

TURN SIGNAL LENS

2721
$4

WIRING HARNESS, FACTORY

2730
Call

CHASSIS & BODY

SRX

MIRROR, CHROME, O.E. EQUIV.,  Yamaha left only, price ea.

1812
$16

MIRROR, CHROME, O.E. EQUIV.,Yamaha, right only, price ea.

1812R
$16

MIRROR, BAR-END, BLACK

1813
$20

MIRROR, BAR-END, CHROME

1814
$24

STEERING STABILIZER KIT, DAYTONA

2600
$187

WIND SHIELD, CAFE STYLE, handlebar mount

1860
$58

POLISH OPERATIONS - not presently available

SRX

WHEEL POLISH, PARTIAL (Non-painted portion of your cast wheel) price per wheel

1921
$120

FORK LEG CASTING POLISH, Price per pair, your fork leg

1930
$85