VintageCB750 Supplying CB Riders Since 2010

About Us Why Us? Reviews Shipping Info Returns Contact Us
Wish Lists
0 My Cart

Your cart is currently empty.

Browse all parts
Total (USD): $0.00
View cart
Menu
Search
Wish
Cart 0
My motorcycle Choose your Honda CB model

Search parts

Searching all Honda CB parts

Example: brake pads or oil filter.

1979 Honda CB650 Caliper Pistons & Seals

Inspect the front caliper on your 1979 CB650 before deciding whether it needs a piston, pressure seal, dust boot or sliding-shaft boots. These pieces are listed separately. Match the installed caliper and removed components rather than ordering a generic rebuild bundle.

Close ×
Your saved bike Choose your Honda CB model

Shop By Category

Most orders ship same or next business day Fitment guarantee Listed for your exact model and year? We’ll make it right if it doesn’t fit as described. Mechanic-backed support Ask our team for help choosing the right Honda CB part.
Currently viewing Brake Caliper Rebuild Kits, Caliper Pistons, Bleed Screws

Honda motorcycle parts

Choose your model and year to see parts listed for your bike.

Honda CB900 CB750 CB650 front caliper piston sealing ring 45215-533-004

Honda CB900 / CB750 / CB650 Front Caliper Piston Sealing Ring ~ Replaces 45215-533-004

$5.80 USD
29-0529
Replace your front caliper piston sealing ring with this Front Brake Caliper Piston Sealing Ring, replacing OEM #45215-533-004.Key Features• Front brake caliper piston sealing...
Honda CB1100 CB1000 caliper bleed cap (pk 10) 45108-425-003

Honda CB Caliper Bleed Screw Rubber Cap (Pk/10) ~ Replaces 45108-425-003

$11.95 USD
29-0500
Stock up on caliper bleed screw rubber caps with this Brake Caliper Bleed Screw Rubber Cap 10-pack. Universal type for series 1, 3, 4,...
New
Honda CB750 CB650 CB400 front brake caliper shaft boot 45133-425-003

Honda CB750 / CB650 / CB400 Front Brake Caliper Shaft Boot ~ Replaces 45133-425-003

$4.95 USD
99-4951
Upgrade or restore your classic Honda motorcycle’s front brake system with this Front Brake Caliper Shaft Boot — a quality replacement designed to help...
Honda CB750 CB650 CB450 CB400 front caliper bleed screw 45224-413-003

Honda CB750 / CB650 / CB450 / CB400 Front Caliper Bleed Screw ~ Replaces 45224-413-003

$8.95 USD
73-0995
Replace your front caliper bleed screw with this Front Brake Caliper Bleed Screw, replacing OEM #45224-413-003.Key Features• Front brake caliper bleed screw• Replaces OEM...
Honda CB750 CB650 front caliper piston boot 45109-425-003

1979-81 Honda CB750 / CB650 Front Caliper Piston Boot ~ Replaces 45109-425-003

$15.95 USD
73-1041
Replace your front caliper piston dust boot with this Front Brake Caliper Piston Rubber Dust Boot, replacing OEM #45109-425-003.Key Features• Front brake caliper piston...
Honda CB750 CB650 front caliper piston 45107-425-003

1979-81 Honda CB750 / CB650 Front Caliper Piston ~ Replaces 45107-425-003

$59.95 USD
29-0532
Replace your DOHC CB750 or CB650 front caliper piston with this Front Brake Caliper Piston, 42.8mm diameter x 36.5mm length, replacing OEM #45107-425-003.Key Features•...
Honda CB750 CB650 CB400 front caliper shaft boots pk 4 45133-413-003

1978-79 Honda CB750 / CB650 / CB400 Front Caliper Shaft Boots Pk/4 ~ Replaces 45133-413-003

$19.95 USD
73-0835
Replace your front caliper shaft boots with these Front Brake Caliper Shaft Boots Pk/4. These rubber covers attach to the front brake caliper. Replaces...
compare

1979 Honda CB650 · Caliper Pistons & Seals Buying guide

Separate the hydraulic seal from protective boots

The 42.8 × 36.5mm piston, hydraulic sealing ring and outer dust boot are distinct caliper components. Shaft boots protect another location, so identify the part being serviced before ordering.

Parts to consider

1979-81 Honda CB750 / CB650 Front Caliper Piston ~ Replaces 45107-425-003 Front caliper piston42.8mm diameter × 36.5mm long; replaces reference 45107-425-003.View part Honda CB900 / CB750 / CB650 Front Caliper Piston Sealing Ring ~ Replaces 45215-533-004 Caliper piston sealing ringFront-caliper sealing ring; reference 45215-533-004.View part 1979-81 Honda CB750 / CB650 Front Caliper Piston Boot ~ Replaces 45109-425-003 Caliper piston dust bootFront piston rubber dust boot; reference 45109-425-003.View part

Related parts: Front caliper bleed screw · Caliper shaft boot four-pack · Bleed-screw cap ten-pack

Choose by the inspected caliper

The featured piston is 42.8mm in diameter and 36.5mm long. The pressure sealing ring and rubber dust boot have separate listings. Confirm the supplied piston contents and have the caliper bore and piston surfaces inspected before committing to a rebuild.

Keep similar boot names straight

The four-pack of shaft boots replaces 45133-413-003. Another shaft boot in this category carries a different reference, so package size alone should not determine the choice. Match the position and old shape using the relevant parts diagram.

Buying questions

Does the piston include its sealing ring?

The piston, sealing ring and outer dust boot are separate listings. Build the order from the inspected caliper parts instead of assuming the piston product is a complete rebuild kit.

What size is the featured piston?

It is 42.8mm in diameter and 36.5mm long. Verify the installed caliper and removed piston before ordering, particularly if a previous owner has fitted another front end.

Are shaft boots the same as the piston dust boot?

No. They protect different locations on the caliper. Identify the required position and part reference first; the shaft-boot four-pack does not replace the piston sealing components.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

Ask a fitment question
Parts categories for 1979 Honda CB650

Your cart

×