See Sidedraft Diagram
See Downdraft Diagram

Item No.Order No.Keihin No. Carb Size/Application

5.Top Cover
021-0021030-850-200028-33mm
021-0031030-855-200035-41mm
6.Gasket, Top Cover
021-0051031-805-200028-33mm
021-0061031-806-200035-39mm
021-0071031-807-200041mm
8.Screw M4x10 x0.7
021-0080136-807-1100all
9.Screw M4x8
021-0100136-808-1100all
10.Mounting Bracket
021-127CBR60032, 33mm
021-126CBR600F2 / F332, 33mm
021-125FZR400/600, YZF60032, 33mm
021-129 ZX6, ZX10, ZX11, GSXR Air Cooled (all), Triumph, Zephyr, BMW35-41mm
021-131 CBRF3, CBR900, CB1000, YZF1000R1/1600 FZR750, FZR100035-41mm
021-132 Ducati Dual, Ducati Single, SV650 (F) 35-41mm
021-133 KTM, XR250, SR50035-41mm Single Carb
30 degree
021-134 XR600, TRX400EX, SV650 (R)35-41mm
Single Carb
15 degree
021-551H-D Evo CV stock Cable41mm
021-549Single Carb
0 degree
35-41mm
021-550Late GSX-R-
021-249GSXR Liquid Cooled, Vulcan 1500, MotoGuzzi35-41mm
021-122ZX7 '91-¹95, ZX9R, R-635-41mm
11. Screw, Bracket
021-0120136-803-1100all
12.Throttle ShaftPitch:
021-1355025-951-2100 71-96-71
021-1375025-955-210075-96-75
021-1395025-956-210086-92-86
021-1415025-955-220075-86-75
021-1425025-977-220075-75-75
021-1435025-953-210071-83-71
021-1445025-984-2100101
13.Collar
021-0141305-958-7000all
14.Coil Spring
021-0161305-932-2001standard / multi
021-2531305-942-2000singles, light multi
15.Washer
021-0180301-092-7000all
16.Link Arm
021-0201061-815-210028-33
021-0211061-816-210035-39
17.Hexagon Nut
021-0230208-811-1100all
18.Stop Screw
021-0251034-836-2000all
19.Throttle Valve
021-300N501-18C0228-33
021-325N501-20C0035-39
20.Roller
021-0271119-803-7002
21.Vaccum Release Plate
021-0291099-816-600128-33
021-0301099-817-200135-41
22.Seal
021-0321099-816-600128-33
021-0331099-817-200135-39
23.Needles
Part No.N427-90-xxx28-33
Part No.N427-OC-xxx35-39
24.Clip
018-6161421-802-1000all
25.Needle Set Screw
021-0341421-801-2000all
26.Main Nozzle
021-0371154-835-2100all Downdraft
021-0361154-838-2000all Horizontal
27.Main Jet
Part No. 99101-357-xxx
28.Slow Jet
Part No. N424-25-xxx
30.Slow Air Screw and Spring
(replaces Slow Air Jet)
021-2301014-817-2000screw
021-23516052-KM4-0040spring
32.Screw
021-039N447-05A006° taper all
021-038N447-05C009° taper (option)
021-040N447-05B0012° taper (option)
33.Pilot Screw, Coil Spring
021-0411290-812-2001all
34.Pilot Screw, O-Ring
021-043W9351-11028all
35.Pilot Screw Washer
021-0450301-803-2000all
36.Valve SeatN361-03-xxx
Fuel pump applications use N. Valve: 018-676
021-2181.00all Downdraft
021-2191.20
021-2201.40
021-2211.60
021-2221.80
021-2232.00 Std. Downdraft
021-2242.20
021-2252.40
021-2262.60
Valve Seat N361-043-xxx
Gravity Flow applications use 018-504 N. Valve
021-2403.20 Std. Horizontalall Horizontal
021-2413.40
021-2423.60
021-2433.80
021-2444.00
37.Valve Seat O-Ring
021-047W9351-13090all
38.Valve Seal Screw
021-0490118-804-100Downdraft
021-2500118-806-1100Horizontal
39.Float Comp.
021-0511052-837-2200all
40.Arm Pin
018-670W9525-25250all
41.Arm Pin Screw
021-05393500-04008all
42.Float Valve Comp.
018-676W9522-53001all Downdraft
018-5041062-814-2100all Horizontal
43.Float Valve Clip
018-6740405-019-1000all
45.Float Bowl Packing
021-0551202-846-6000all
47.Cover, Accelerator Pump
021-0571230-826-2001all
48.Float Bowl
021-2601050-881-2100 #1Horizontal
49.021-0591050-864-2100 #1Downdraft
021-0611050-865-2100 #2"D" w/ centerpull
021-2591050-880-2100 #2 Horizontal w/ center pull
021-2581050-868-2100Single Downdraft
021-2641050-886-2100Single Horizontal
50.021-0631050-866-2100 #4 "D" w/ centerpull
021-0641050-862-2100 #4"D" w/ right pull
021-2631050-885-2100 #4"H" w/ right pull
021-2621050-883-2100 #4"H" w/ center pull
Item No.Order No.Keihin No. Carb Size/Application

51.Diaphragm Comp.
021-0651201-055-2101all
52.O-Ring, Accelerator Pump
021-067W9353-36000all
53.Coil Spring, Accelerator Pump
021-0691300-142-2000all
54.O-Ring, Accelerator Pump
021-071W9351-19058all
64.Link Lever Comp.
021-073100-868-210028-33mm
021-0741100-870-210035-39mm
65.Link Lever
021-0761100-867-7001all
021-2521100-872-7000Horizontal
66.Coil Spring
021-0781305-933-2000 #1all
67.021-0801305-934-2000 #228-33mm "D"
021-0811305-939-2000 #235-39mm "D"
021-2541305-952-2000Horizontal
68.Rod, Link Lever
021-0831458-825-2000all
021-2561458-827-2000GSXR aircooled
69.Washer, Rod Link
021-0850301-136-7000all
70.Pin, Link Lever
021-087W9251-12081all
71.Rubber Cap
021-0891028-825-2001all
72.Rod
021-0911458-826-2000Downshaft
021-2551458-829-2000Horizontal
73.Washer, Link Lever
021-0930301-114-1000all
74.Collar, Link Lever
021-095W1704-241-9900all
76.Bolt M5x95
021-1450136-801-1100CBR600, FZR400/600
021-1470136-811-1100ZX6/7/10/11
021-1490136-812-1100FZR750/1000
021-1460136-809-1100M5x90 (Option)
77.Spacing Collar #1
021-153N704-01056 56mm CBR600, CB1,FZR400, FZR600
021-155N704-01060 60mmZX6/10/11
021-157N704-01071 71mmFZR750/1000
021-151N704-0105050mm (option)
021-152N704-0105353mm (option)
021-156N704-0106868mm (option)
78.Spacing Collar #2
021-161N704-02071 71mmZX7/10/11
021-163N704-02077 77mmCB1,FZR750/1000
021-167N704-02081 81mmZX6, CBR600, FZR400/600
021-158N704-0205050mm (option)
021-159N704-0205353mm (option)
021-160N704-0206868mm (option)
021-168N704-0208989mm (option)
79.Spacing Collar #3
021-171N704-03071 71mmZX7/10/11
021-173N704-03077 77mmCB1,FZR750/1000
021-175SN704-03081 81mmCBR600, FZR400,
021-169N704-03056 56mmFZR600, ZX6
021-170N704-03060 60mm
021-172N704-03065 65mm
021-174N704-03068 68mm
021-176N704-03089 89mm
80.Rubber Pipe
021-1790804-985-0000 34mmCBR600,FZR400 FZR600, CB1, ZX7/10/11
021-1810804-990-0000 41mmZX6
021-1830804-992-0000 46mmFZR750/1000
021-1800804-988-0000 31mm(option)
81.Air Vent Joint (Breather)
021-1871077-826-7000all (R1)
021-1881077-806-7001Dual Ducati
82.U-Ring Air Vent
021-097W9353-65000all
84.Fuel Joint (center)
021-1911075-834-2000 CBR600,FZR400, FZR600, CB1, ZX6, FZR750/1000
021-1931075-836-2000ZX7/10/11
85.O-Ring, Fuel T-Joint
018-755W9351-13057all
88.Rubber Pipe (R.L.)
021-1970804-991-0000 45mm CBR600, CB1, FZR400/600
021-1990804-437-0001 50mmZX6
021-2010804-991-0000 60mm FZR750/1000 (R.L/Ctr), GSX-R750 93-95
021-2030804-991-0000 70mmZX7/10/11
021-2020804-444-0000 40mm(option)
89.Fuel T-Joint
018-7511077-804-7000 CBR600, CB1, FZR400/600, ZX6/10/11, 86-92 GSXR
018-7531077-803-7000 FZR750/1000 Liq. Cool GSXR
021-2511074-848-2100singles downdraft
021-1901077-834-2100Dual Ducati
90.Step Screw Comp.
021-0991034-837-2100all
021-5311034-837-250113.25"
91.Washer, Stop Screw
021-1010301-078-1200all
92.Coil Spring, Stop Screw
021-1031300-112-2000all
100.Screw, Bracket
021-1050136-804-1100all
103.Main Air Jet
Part No. 99101-393-xxx
121.Float Bowl
021-1071050-863-2100 #3"D" w/ center pull
#2 "D" w/ right pull
021-2611050-882-2100 #3"H" w/ center pull
021-2611050-882-2100 #2"H" w/ right pull
122.O-Ring, Drain Bolt
021-109W9351-19145all
123.Drain Bolt
021-1111018-804-2000all
124.Rubber Pipe
021-2010804-437-0001 60mmZX6/7/10/11
021-2090804-986-0000 70mmCBR600, CB1 FZR750/1000
021-2100804-987-0000 80mm(option)
125.Adapters
126. Velocity Stacks (standard 50mm long)
*Sold Individually
021-1131130-806-700228-33mm Blue
021-1141130-807-700035-41mm Blue
021-1151130-808-7000 35-41mm Red (35mm Long)
127.Rubber Cap, T-Joint
018-7591028-808-7000all
128.Clip, Rubber Cap
018-761W9535-55000all
129.Air Cleaner Adapter
130.O-Ring, Air Cleaner Adapter
021-439FCR 35-41 all


Back to Keihin Page