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Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-216-000

$4.13 USD
17-2816
Replace one exhaust port gasket on your CB500/CB550 or smaller Honda with this Exhaust Port Gasket, 1 piece, replacing OEM #18291-216-000 / #18291-MN5-650. Fits...
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Honda CB125S CB100K turn signal flasher relay 38310-428-671

1970-82 Honda CB125S / CB100K Turn Signal Flasher Relay ~ Replaces 38310-428-671

$15.82 USD
12-0104
Replace your CB100 or CB125S turn signal flasher with this Turn Signal Flasher Relay, replacing a range of OEM references (#38310-428-671, #38300-GF0-405, #38300-243-670, #38300-089-671,...
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Universal motorcycle face mask

Universal Motorcycle Face Mask

$17.50 USD
13-0005
Keep road debris out of your eyes with this Face Mask with removable goggles. Features air holes in the mouth area and on the...

Established 2010 T-Shirt (XL Size)

$26.95 USD
2/-XL
Proudly display your place in the CB750 community with the Established 2010 T-Shirt in X-Large. A black 100% cotton tee featuring the "Established 2010...
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Honda CB750 CB700 performance magnetic oil drain plug joker machine

Honda CB Performance Magnetic Oil Drain Plug ~ Joker Machine

$49.95 USD
73-1074
Catch metal debris from your engine with this Joker Machine Brand Custom Performance Magnetic Oil Drain Plug, 12mm dia x M1.5, OEM #92800-12000.The plug...
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Honda hrc logo trucker hat

Honda HRC Logo Trucker Hat

$27.95 USD
61-1144
Top off your kit with this Honda Logo with HRC Emblem Trucker Hat. High-quality hat with beautifully stitched Honda logo. Snap-on adjustable back.Key Features•...
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White Honda logo hat vintage motorcycle hat

White Honda Logo Hat

$22.95 USD
61-1142
Add a White Honda Logo Hat to your gear collection. Velcro adjustable back.Key Features• White Honda Logo Hat• Velcro adjustable backPart Number: 61-1142
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Honda CB900 CB200 CB175 CB125 5.25 in. battery band 95012-15001

Honda CB 5.25 in. Stock Type Battery Band ~ Replaces 95012-15001

$8.95 USD
99-4991
Upgrade or restore your motorcycle’s battery mounting system with this Stock Type Battery Band — a quality replacement designed to keep your battery securely...
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Honda CB750 CB700 CB650 CB550 brake rod adjuster knob joker machine

Honda CB Brake Rod Adjuster Knob ~ Joker Machine

$29.95 USD
73-1072
Upgrade your brake rod adjuster knob with this Joker Machine Brand Custom Brake Rod Adjuster Knob, replacing OEM #95015-42000.Gives your bike a great custom...

1975-81 Honda CB400F / CB125S Fuel Petcock ~ Replaces 16950-GF6-015

$13.51 USD
12-0078
Fit a petcock to our CB400F aftermarket gas tank or replace the stock one on your CB125S with this Fuel Petcock. An M14 x...
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Honda CB750 CB650 CB550 replacement brake lever for master cylinder

Honda CB Replacement Brake Lever for Master Cylinder 08-0262

$9.95 USD
08-0430
Replace the brake lever on the #08-0262 Master Cylinder Assembly specifically with this Brake Lever. Designed for this particular master cylinder.Key Features• Replacement brake...
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Universal black 290mm eye-to-eye shorty motorcycle shock absorber set

Universal Motorcycle Shorty Shock Absorber Set ~ Black Eye-to-Eye 290mm

$139.95 USD
06-3592
Go shorter with a different mounting configuration using this Custom Shorty Shock Absorber Set. Black body and shroud with black progressive-wound springs, 290mm (11...

Established 2010 T-Shirt (Large Size)

$26.95 USD
2/-L
Celebrate the CB750 community in this Established 2010 T-Shirt (Large). A black 100% cotton tee featuring the "Established 2010 VintageCB750 Logo" on the front,...
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750 four engine t-shirt (xxl size)

750 Four Engine T-Shirt (XXL Size)

$29.95 USD
3/2XL
Wear your respect for Honda's legendary four-cylinder on your chest with the 750 Four Engine T-Shirt in XX-Large. A 100% cotton black tee featuring...
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Established 2010 t-shirt (xxl size)

Established 2010 T-Shirt (XXL Size)

$26.95 USD
2/-2XL
Represent the CB750 scene in this Established 2010 T-Shirt (XX-Large). A roomy, soft 100% cotton tee in black with the "Established 2010 VintageCB750 Logo"...
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Honda CB500K CB125S handlebar steering lock 53600-086-007

1971-85 Honda CB500K/CB125S Handlebar Steering Lock ~ Replaces 53600-086-007

$14.07 USD
29-0084
Replace your handlebar steering lock with this Handlebar Steering Lock / Fork Lock with keys, replacing OEM #53600-086-007.Key Features• Handlebar steering lock / fork...

Honda CB125 / CB100 Oil Pump Gasket ~ Replaces 15126-107-020

$2.95 USD
73-1196
Ensure a secure, leak-free seal during your engine rebuild or maintenance with this Oil Pump Gasket. Precisely engineered to replace OEM# 15126-107-020, this gasket...

Honda CB Hand Lever ~ Replaces 53175-402-700

$9.95 USD
08-0066
Fit a silver-with-black-tip brake lever on your small-bore Honda with this Brake Lever, replacing a range of OEMs (#53175-402-700, #53170-216-670, #53175-286-000, #53170-286-670, #53170-329-010, #53170-369-700,...
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Honda CB100 CB125S engine oil seal kit 91201-030-0333

1970-80 Honda CB100 / CB125S Engine Oil Seal Kit

$11.21 USD
07-4648
Rebuild your CB100K or CB125S small-bore engine with this 4-piece Engine Oil Seal Kit. Covers the key oil seals for a proper refresh, saving...
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Universal motorcycle bottle opener vintage garage accessory

Universal Motorcycle Bottle Opener ~ Vintage Garage Accessory

$14.95 USD
19-0118
Find a great gift for any motorcycle fan with this Motorcycle Bottle Opener. Sturdy construction with an aged brass look. 5" x 1.5".Key Features•...
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Honda 93 red hat vintage motorcycle hat

Honda 93 Red Hat

$29.95 USD
61-1145
Top off your kit with this Honda 93 Red Hat. High-quality hat with beautifully stitched logos.Key Features• Honda 93 Red Hat• Beautifully stitched logosPart...
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Honda CB125 CB100 tappet adjusting hole cap 12361-383-000

Honda CB125 / CB100 Tappet Adjusting Hole Cap ~ Genuine Honda 12361-383-000 ~ Replaces 12361-383-000

$13.50 USD
99-5199
This genuine Honda tappet adjusting hole cap closes the valve adjustment access opening on the Honda models listed below. It is also commonly searched...
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Honda CB650 CB550 CB500 piston pin 13111-440-000

Honda CB Genuine Honda Piston Pin ~ OEM 13111-440-000 / 13111-286-000

$18.95 USD
99-5321
Upgrade or restore your classic Honda motorcycle with this Genuine Honda Piston Pin — precision‑engineered and made in Japan. This authentic replacement fits and...
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Honda CB125 CB100 Honda oil filter screen spring 15426-107-000

Honda CB125 / CB100 Genuine Honda Oil Filter Screen Spring ~ OEM 15426-107-000

$25.00 USD
99-5044
Upgrade or restore your classic Honda motorcycle with this Genuine Honda Oil Filter Screen Spring — precision‑engineered and quality made in Japan. This authentic...
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Honda CB125S front friction pad set 45345-107-720B

1974/1975/1976/1978 Honda CB125S Front Friction Pad Set ~ Replaces 45345-107-720B

$27.95 USD
29-3564
Replace your CB125S front brake pads with this Front Brake Pad Set of 2, replacing OEM #45345-107-720B.Key Features• Front brake pad set of 2•...

1974-85 Honda CB125S Rear Friction Shoe Set ~ Replaces 43120-KB9-005

$14.95 USD
29-3101
Replace your CB125S rear brake shoes with this Rear Brake Shoe Set, replacing OEM #43120-KB9-005. Diameter 109.5mm, width 25mm.Key Features• Rear brake shoe set•...
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Honda CB100 CB125 oil filter screen 15421-107-000

Honda CB100 / CB125 Oil Filter Screen ~ Replaces 15421-107-000

$5.64 USD
01-8998
Protect your small-displacement Honda's engine with this Oil Filter Screen, a direct replacement for OEM #15421-107-000. Fits the CB100K and CB125S series, filtering debris...
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T-shirt (small size)

Classic T-Shirt (Small Size)

$20.59 USD
00-0001/S
Wear your passion for classic Hondas with the VintageCB750 Classic T-Shirt in Small. This 100% cotton tee comes in black with the VintageCB750 logo...

Established 2010 T-Shirt (Medium Size)

$26.95 USD
2/-M
Honor the CB750 community in everyday comfort with the Established 2010 T-Shirt in Medium. A black 100% cotton tee carrying the "Established 2010 VintageCB750...

Established 2010 T-Shirt (Small Size)

$26.95 USD
2/-S
Commemorate a decade-plus of CB750 community with the Established 2010 T-Shirt in Small. This black 100% cotton tee carries the "Established 2010 VintageCB750 Logo"...
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Honda Gold Label T-Shirt - Black

Honda Gold Label T-Shirt - Black

$29.95 $27.95 USD
You save $2.00
33/M
A black Honda tee with the Gold Label wing graphic printed on the front. Factory Effex uses a lightweight cotton and polyester blend for...

Universal Motorcycle Spark Plug Cap ~ LD05F

$8.95 USD
23-3118
Spark Plug Cap - LD05F for custom or restoration work on classic Honda CB motorcycles.  Key Features Aftermarket part Sold as: Each Fitment /...

Honda CB125 / CB100 Oil Filter Cap Gasket ~ Replaces 15459-KT0-710

$5.95 USD
73-1197
Maintain proper oil system sealing with this high-quality Oil Filter Cap Gasket. This direct replacement meets OEM specifications to ensure a leak-free seal when...

1976-82 Honda CB125S Pulse Generator Cover Gasket ~ Replaces 30372-437-010

$8.27 USD
73-1198
Restore factory sealing and protect your engine with this Pulse Generator Cover Gasket, designed to replace worn or damaged gaskets. Made to meet OEM...

1973-85 Honda CB125 Cylinder Head Gasket ~ Replaces 12251-437-P00

$14.95 USD
73-1192
Restore compression and prevent leaks with this high‑quality Cylinder Head Gasket. This gasket is engineered to meet OEM specifications for a precise fit and...

Honda CB125 / CB100 Steel Clutch Plate ~ Replaces 22311-107-000

$7.00 USD
39-1421
Replace your CB100K or CB125S steel clutch plate with this Steel Clutch Plate, replacing OEM #22311-107-000 / #22311-KN4-680.4 pieces required per bike.Key Features• Steel...

Honda CB125 / CB100 Clutch Friction Plate ~ Replaces 22201-166-000

$9.50 USD
39-1094
Replace your CB100K or CB125S clutch friction plate with this Clutch Friction Plate #2, replacing OEM #22201-166-000.5 pieces required per bike, order the number...

1973-84 Honda CB125S Steering Bearing Kit

$69.95 USD
28-2015
Upgrade your CB125S steering bearings with this Steering Bearing Kit. Tapered roller steering bearing conversion kit, superior to OEM quality with 10X the contact...
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Honda CB200 CB175 CB160 CB125 Clymer service manual

Honda CB200 / CB175 / CB160 / CB125 Clymer Service Manual

$39.95 USD
61-0049
Service your bike with this Clymer Service Manual. Clymer motorcycle repair manuals are written specifically for the do-it-yourself enthusiast. From basic maintenance to troubleshooting...

1976-84 Honda CB125S Fork Seals

$18.76 USD
27-1008
Replace your CB125S fork seals with this Fork Seal Set, 27 x 39 x 10.5mm. Made in Japan by OEM supplier.Key Features• Fork seal...

1976-85 Honda CB125S Cam Chain ~ 25H x 98 ~ Replaces 14401-383-003

$31.72 USD
52-3013
Replace your CB125S cam chain with this Cam Chain 25H x 98, replacing OEM #14401-383-003 / #14401-428-003 / #14401-439-003. D.I.D (Daido) brand. Pitch .25,...

Honda CB Exhaust Headpipe Gaskets ~ (Pk/10) ~ Replaces 18291-216-000

$32.95 USD
17-3816
Stock up on exhaust port gaskets for your CB500/CB550 or smaller twins with this 10-pack, replacing OEM #18291-216-000 / #18291-MN5-650.Key Features• Exhaust port gaskets,...

Parts and fitment guide for your 1978 CB125S5

When a CB125S has a replacement tank or altered electrics, identify those assemblies separately. The fuel tap’s mounting thread and the ignition coil’s voltage are more useful checks than the bike’s appearance.

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Selected parts for the 1978 CB125S5

Check the product application, dimensions and pack quantity before ordering.

  • M14 fuel petcock — 1975-81 Honda CB400F / CB125S Fuel Petcock ~ Replaces 16950-GF6-015
  • Clutch lever — Honda CB Clutch Lever ~ Replaces 53178-369-700

Identify your 1978 Honda CB125S5

Check the frame identification, engine markings and registration details together. A photograph or paint colour alone cannot establish model year. An engine swap or previous repair can change the parts your bike needs.

Honda CB model guide

Check the tank thread and ignition voltage

The coil with condenser is specified as 6V, reference 30500-950-405. Match the installed ignition requirements, voltage and connections, especially if the electrical system has been converted. The clutch lever replaces 53178-369-700.

Fitment questions

What should I check if the fuel tank has been replaced? This tap has an M14 × 1.0 mounting thread. Match that connection to the fitted tank; the motorcycle’s year alone does not identify an aftermarket tank fitting.

Does an OEM reference mean the part is genuine Honda? Not by itself. Aftermarket parts can quote the Honda number they replace. Look for an explicit genuine Honda description if brand origin matters; “OEM-type” or “replaces OEM” does not identify the manufacturer.

Related Honda CB125S collections

Need help matching a part? Send your model year, original market, frame and engine markings, the part link and component photos. Ask us about fitment

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