The Honda HRU21 takes the Honda blade kit 4x 21" 06725-VJ9-W80 as its blade; Australian sellers list it from A$50.95 as of 28 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your lawn mower
Honda HRU21
Lawn mower
Confirmed against Honda's listConfirmed against Honda's own compatibility list
Not yours? Change
Takes the 06725-VJ9-W80 blade
blade kit 4x 21" 06725-VJ9-W80 · check the code on your old part before ordering.
Takes 4 swing-back blades: the 4-blade kit 06725-VJ9-W80 replaces all four; Honda also sells the hi-lift and lo-lift pairs.
Your lawn mower
Lawn mower
Confirmed against Honda's listConfirmed against Honda's own compatibility list
Takes the 06725-VJ9-W80
Blade · check the code on your old part.
Takes 4 swing-back blades: the 4-blade kit 06725-VJ9-W80 replaces all four; Honda also sells the hi-lift and lo-lift pairs.
Other Honda lawn mowers that take the 06725-VJ9-W80
GenuineGenuine Honda
$50.95
Sun City Motorcycles · 28 OctLowest genuine · Sun City Motorcycles · checked 28 Oct
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Honda. Compatible: another brand.Genuine is made by Honda. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest price · $50.95
Sun City Motorcycles. Every seller we track is listed below. Some links earn us a commission. Some seller links earn us a commission, at no extra cost to you.
Other parts this lawn mower takes
- Honda air cleaner element 17210-Z1V-003 (GXV160)Open Amazon AU$10.00 each · 2-pack $19.99
The air filter. Honda's HRU21 parts list shows three air cleaners over the model's life: element 17210-Z1V-003, element 17211-ZG9-800, or the dual element 17210-ZE6-305 on early units. Match the part in your mower. Separate from the blade. Reduces dust and grass debris drawn into the engine with the intake air. Replace every 12 months.
Compare 3 sellers - Honda air cleaner element 17211-ZG9-800 (GXV140)Open Power Mowers$5.94
The air filter. One version of the HRU21 (GXV140 engine) takes 17211-ZG9-800 with outer foam 17218-ZG9-800. Separate from the blade. Reduces dust and grass debris drawn into the engine with the intake air.
Compare 2 sellers - Honda outer foam filter 17218-ZE6-305 (GXV160)Open Power Mowers$4.02
The pre-filter. Outer foam for the 17210-Z1V-003 and 17210-ZE6-305 versions of the HRU21 air cleaner. Separate from the blade. Reduces larger dust and grass particles before they reach the paper element.
Compare 2 sellers - Honda outer foam filter 17218-ZG9-800 (GXV140)Open Sun City Motorcycles$7.00
The pre-filter. Outer foam for the 17211-ZG9-800 version of the HRU21 air cleaner. Separate from the blade. Reduces larger dust and grass particles before they reach the paper element. Out of stock when we checked.
Compare 1 seller
AUD, before delivery. Each price shows when it was checked.
Opens Sun City Motorcycles in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Replace it when a blade is worn, bent, cracked or damaged, as a set, Honda says; inspect the blades for damage, cracks and rust, and have a dull blade sharpened.
After replacing: No reset needed.
How to change the blade in your Honda HRU21
Watch the guide or follow the steps.
No clear video for this part yet. The steps cover it.
- 1Stop the engine, turn the fuel valve off and disconnect the spark plug cap from the spark plug. Wear thick leather gloves.
- 2Tilt the mower onto its right side so the fuel cap side is up; Honda says this helps prevent fuel leaks and carburettor flooding.
- 3Hold the blades so they cannot turn and remove the blade bolts, then take off the old swing-back blades.
- 4Clean grass and dirt from around the blade disc and check the disc for damage; replace it if a blade has hit something hard.
- 5Fit the new blades as a set with the blade-setting bolts, washers and lock nuts shown in Honda's parts diagram (Honda says to use only Honda genuine bolts and washers), and tighten them firmly. If you do not have a torque wrench, Honda says to have a Honda dealer tighten the blade bolts.
Every number this part goes by
- Retail name:
- 06725-VJ9-W80
- Retail name:
- 06725VJ9W80
Sellers list any of these; they are the same part.
About your Honda HRU21
Honda lawn mower — Buffalo 21". Its blade is the blade kit 4x 21" 06725-VJ9-W80, part 06725-VJ9-W80.
Other blades the maker lists for this lawn mower:
- Honda 2 blade kit lo-lift 21" 06720-VJ9-A00. Honda also lists 06720-VJ9-A00 (2 blade kit lo-lift 21") for this model.
- Honda 2 blade kit hi-lift 21" 06725-VJ9-B80. Honda also lists 06725-VJ9-B80 (2 blade kit hi-lift 21") for this model.
Also in this lawn mower:
- Honda air cleaner element 17210-Z1V-003 (GXV160) (every 12 months). Honda's HRU21 parts list shows three air cleaners over the model's life: element 17210-Z1V-003, element 17211-ZG9-800, or the dual element 17210-ZE6-305 on early units. Match the part in your mower.
- Honda air cleaner element 17211-ZG9-800 (GXV140). One version of the HRU21 (GXV140 engine) takes 17211-ZG9-800 with outer foam 17218-ZG9-800.
- Honda outer foam filter 17218-ZE6-305 (GXV160). Outer foam for the 17210-Z1V-003 and 17210-ZE6-305 versions of the HRU21 air cleaner.
- Honda outer foam filter 17218-ZG9-800 (GXV140). Outer foam for the 17211-ZG9-800 version of the HRU21 air cleaner.
Where the model number is: The model is on the label on the mower's deck or handle. Disconnect the spark plug lead, or take the battery or safety key out, before you tip the mower: the blade is sharp.
Fits these 4 Honda models
HRU216. Takes 4 swing-back blades (2 hi-lift, 2 lo-lift): the 4-blade kit 06725-VJ9-W80 replaces all four; Honda also sells the hi-lift and lo-lift pairs.
HRU216M. Honda lists the 4-blade kit 06725-VJ9-W80, the hi-lift pair 06725-VJ9-B80 and the lo-lift pair 06720-VJ9-A00 for the HRU216M.
The other 2 models. Takes 4 swing-back blades: the 4-blade kit 06725-VJ9-W80 replaces all four; Honda also sells the hi-lift and lo-lift pairs.
Common questions
- Which blade fits the Honda HRU21?
- The Honda HRU21 takes the Honda blade kit 4x 21" 06725-VJ9-W80. Takes 4 swing-back blades: the 4-blade kit 06725-VJ9-W80 replaces all four; Honda also sells the hi-lift and lo-lift pairs.
- Where can I buy the 06725-VJ9-W80 in Australia?
- We track 1 Australian seller for the 06725-VJ9-W80; the lowest listed price when we last checked was A$50.95 at Sun City Motorcycles. Prices are re-checked daily and dated on this page.
- How do I fit the 06725-VJ9-W80 in a Honda HRU21?
- 5 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- A blunt blade tears the grass tips, which then brown, and a bent blade makes the mower vibrate and wears the engine or motor.
- Is there anything to reset afterwards?
- No reset needed.
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