Suspension oil weight chart
Last updated: 2026
⚠️ Fork Oil Equivalence Charts Are Not What You Think
Most riders use oil equivalence charts to find a “similar” fork oil across brands.
Sounds simple, right?
👉 But here’s the problem:
There is no universal standard for fork oil viscosity.
That means:
- A “5W” from one brand can behave like a “7.5W” from another
- Two “equivalent” oils can feel completely different on the bike
👉 So if you’re using a chart blindly… you’re guessing.
And guessing with suspension always leads to:
- Poor front-end feel
- Inconsistent braking behavior
- Lack of confidence in corners
👉 If you actually want to understand how to choose the right oil:
→ Motorcycle Suspension Adjustment Course
https://motoiservices.com/en/motorcycle-suspension-adjustment-course/
What Really Matters: cSt, Not “W”
Most riders think fork oil is defined by “5W”, “10W”, etc.
👉 That’s marketing.
What really matters is centistokes (cSt) — the real viscosity of the oil.
Two oils with the same “W” rating can have completely different cSt values.
👉 That’s why equivalence charts can only be approximations.
If you don’t understand this, you’re not tuning your suspension… you’re just swapping fluids.
Suspension oil equivalence chart
Below you can find a equivalence suspension oil chart (both for motorcycle and bicycle) where you can easily choose the closest oil to the original one.
Oils are sorted by Viscosity. SAE range is only shown for your reference.
If you can’t find the same viscosity as your original oil has, choose one with a difference of +/- 5cst. Beyond that, the damping behaviour is quite different.
A change on oil’s viscosity could need a new damping adjuster (low speed adjusters COMP/TEN) set-up.
Quick Tip: Oil viscosity affects feel, but it won’t fix incorrect settings.
| SAE range | Brand/product | Kinematic Viscosity @ 40ºC (cSt) | Viscosity index |
|---|---|---|---|
| 2,5W | Putoline GPR6 | 6,66 | 438 |
| 2,5W | Wilbers TF Fork Oil | 6,74 | – |
| 2,5W | Putoline HPX R | 6,74 | 458 |
| Öhlins 1302 | 7,00 | – | |
| 2,5W | RockShox | 10,75 | 325 |
| 2,5W | Showa SS25 | 11,27 | – |
| KYB K2C (Rear shock) | 11,30 | – | |
| Öhlins 1304 | 12,00 | – | |
| 2,5W | Shock Absorber Oil K-Tech High Performance | 12,3 | ND |
| 3,5W | Putoline GPR6 | 12,80 | 378 |
| 2,5W | Champion Proracing GP Fork Oil | 13.8 | 175 |
| 3W | Maxima Plush Damping Fluid | 14,00 | 228 |
| 2,5W | Silkolene RSF 2.5 | 14,00 | – |
| Öhlins 1306 | 14,00 | – | |
| 5W | Showa SS19 | 14,14 | – |
| Öhlins 1312 | 14,26 | – | |
| 2,5W | Motorex Racing Fork Oil | 14,50 | 250 |
| Motorex Racing Shock Oil | 14,80 | 272 | |
| 5W | Shell Advance Fork Oil | 15.00 | 153 |
| Öhlins 1311 | 15,00 | – | |
| 5W | Putoline Light Fork | 15,00 | – |
| Motorex Racing SD-1 | 15,00 | 110 | |
| 2,5W | Motul Fork Oil Factory Line | 15,00 | 112 |
| 5W | Showa SS-05 | 15,10 | – |
| 5W | Showa A15 | 15,30 | – |
| Liqui Moly Shock Oil | 15,30 | 106 | |
| 3W | IPONE Fork Fluid 3 Racing | 15,50 | 115 |
| 5W | Fox Racing Oil | 15,80 | 168,2 |
| 5W | KYB 01 (old) | 15.60 | – |
| 5W | SUZUKI FORK OIL L01 | 15.60 | – |
| 5W | KYB 01M | 15,85 | – |
| 5W | KYB KHL15-11 | 15,90 | – |
| 5W | Valvoline SynFork | 16,00 | 339 |
| 4W | Motorex Racing Fork Oil | 16,00 | 250 |
| 5W | KYB KHL15-10 | 16,05 | – |
| 5W | RockShox | 16,10 | 285 |
| 5W | Maxima Racing Fork Fluid | 16,20 | 201 |
| Motul Shock Oil | 16,3 | 400 | |
| 5W | KYB Oil 02M | 16,31 | – |
| 5W | Champion Proracing GP Fork Oil | 16,5 | 171 |
| 5W | Showa SS7 (Honda Pro SS07) | 16,6 | – |
| 4W | Putoline HPX R | 16,90 | 138 |
| 5W | Fox PTFE Infused | 17,00 | – |
| Liqui Moly Shock Oil RACE | 17,4 | 124 | |
| 5W | Front Fork Oil K-Tech High Performance | 17,5 | ND |
| Silkolene 02 SYNTH Fork Oil | 18,00 | – | |
| Öhlins 1303 | 18,00 | – | |
| 2,5W | ELF Fork Oil Syn | 18,00 | 155 |
| 5W | Motul Fork Oil Factory Line | 18,00 | 121 |
| 5W | KYB G5 | 18,10 | – |
| 5W | IPONE Oil Fork 5 | 18,40 | 115 |
| 5W | Liqui Moly Fork Oil Light | 18,40 | – |
| 5W | Maxima Plush Damping Fluid | 18,60 | 223 |
| 5W | Motul Fork Oil Expert | 18,9 | 108 |
| Öhlins 1309 | 19,00 | – | |
| 7,5W | Öhlins 1330 | 20,00 | – |
| Nitron TVT 02 | 22,00 | – | |
| Öhlins 1310 | 22,00 | – | |
| 7W | IPONE Fork Fluid 7 Racing | 22,00 | 126 |
| 7,5W | Shell Advance Fork Oil | 22,00 | – |
| 5W | WP #5 | 22,00 | – |
| 7,5W | Liqui Moly Fork Oil Light/Med | 22,1 | 139 |
| 5W | Wilbers TF Fork Oil | 22,50 | – |
| 5W | Putoline HPX R | 22,50 | 162 |
| 5W | Motorex Racing Fork Oil | 22,90 | 250 |
| 5W | Silkolene RSF 5 | 23,00 | – |
| Öhlins 1313 | 23,05 | – | |
| 5W | ELF Fork Oil Syn | 23,30 | 130 |
| 7,5W | Motul Fork Oil Factory Line | 24,6 | 131 |
| 5W | Putoline Formula GP | 25,10 | 147 |
| 5W | Lucas Oil | 25,34 | – |
| 7W | Maxima Plush Damping Fluid | 26,70 | 139 |
| 5W | Valvoline SynPower Fork Oil | 28,00 | 150 |
| 5W | Castrol Synthetic Fork Oil | 28,00 | 151 |
| 10W | Liqui Moly Fork Oil Medium | 28,5 | 146 |
| 7.5W | Champion Proracing GP Fork Oil | 29,00 | 180 |
| 7W | Maxima Plush Damping Fluid | 30,40 | 218 |
| 7W | Fox Racing Shox | 31,82 | – |
| 10W | Valvoline SynPower Fork Oil | 32,00 | 204 |
| 10W | Castrol Fork Oil | 32,00 | 150 |
| 11,5W | BMW Motorrad Fork Oil Type 2 | 32,00 | – |
| 10W | Putoline Medium Fork | 32,00 | – |
| 10W | Shell Advance Fork Oil | 32.00 | 153 |
| 10W | Valvoline SynFork | 32,00 | 204 |
| 7,5W | Wilbers TF Fork Oil | 32,10 | – |
| 7,5W | Putoline HPX R | 32,10 | 151 |
| 10W | KYB G10 | 32,20 | – |
| 10W | RockShox | 33,00 | 240 |
| 7,5W | WP #7.5 | 33,40 | – |
| 7,5W | Motorex Racing Fork Oil | 34,70 | 250 |
| 10W | Showa SS47 | 34,88 | – |
| 10W | Champion Proracing GP Fork Oil | 35,00 | 185 |
| 7,5W | Silkolene RSF 7,5 | 35,00 | – |
| Öhlins 1315 | 35,00 | – | |
| 10W | Honda Fork Fluid SS-55 | 35,00 | – |
| 10W | Honda Pro HP fork | 35,20 | – |
| 10W | Motul Fork Oil Expert | 35,90 | 116 |
| 10W | Motul Fork Oil Factory Line | 36,30 | 134 |
| 10W | Showa SS08 | 36,51 | – |
| 10W | Maxima Plush Damping Fluid | 37,40 | 182 |
| 10W | IPONE Fork 10 | 37,70 | 110 |
| Fox Float Fluid | 40,00 | – | |
| 20W | Öhlins 1314 | 40,00 | – |
| 15W | H-D Fork Oil tipo “E” | 41,00 | – |
| 10W | Lucas Oil | 42,00 | – |
| 15W | RockShox | 42,80 | 250 |
| Silkolene 05 SYNTH Fork Oil | 43,00 | – | |
| 15W | Champion Proracing GP Fork Oil | 45,00 | 191 |
| 10W | ELF Fork Oil Syn | 45,40 | 135 |
| 15W | Valvoline SynPower Fork Oil | 46,00 | 218 |
| 10W | Maxima Plush Damping Fluid | 46,00 | 219 |
| 15W | Castrol Fork Oil | 46 | – |
| 15W | Shell Advance Fork Oil | 46,00 | 154 |
| 10W | Silkolene RSF 10 | 47,00 | – |
| 10W | ELF Fork Oil | 47,00 | 153 |
| 15W | Maxima Plush Damping Fluid | 47,10 | 159 |
| 10W | Fox Racing Oil | 47,36 | 302,7 |
| 15W | KYB G15 | 47,40 | – |
| 10W | WP #10 | 48,10 | – |
| 15W | Lucas Oil | 49,2 | – |
| 10W | Motorex Racing Fork Oil | 49,50 | 250 |
| Öhlins 1320 | 50,00 | – | |
| 10W | Wilbers TF Fork Oil | 50,10 | – |
| 10W | Putoline HPX R | 50,10 | 151 |
| 15W | Liqui Moly Fork Oil Heavy | 50,4 | – |
| 10W | Putoline Formula GP | 52,40 | 152 |
| 15W | Motul Fork Oil Expert | 58,1 | 116 |
| 15W | IPONE Fork Oil 15 | 60,20 | 115 |
| 20W | Champion Proracing GP Fork Oil | 62,00 | 196 |
| 10W30 | Motorex Racing Fork Oil | 63,60 | 180 |
| 15W | Wilbers TF Fork Oil | 66,80 | – |
| 15W | Putoline HPX R | 66,80 | 165 |
| 15W | WP #15 | 67,80 | – |
| 20W | Castrol Fork Oil | 68 | 143 |
| 20W | Silkolene SF 20 | 68,00 | – |
| 20W | Putoline Heavy Fork | 68,00 | – |
| 15W | Motorex Racing Fork Oil | 71,90 | 250 |
| 15W | ELF Fork Oil | 72,60 | 155 |
| 20W | Lucas Oil | 77,5 | – |
| 20W | Motul Fork Oil Expert | 81,1 | 103 |
| 20W | IPONE Fork Oil 20 | 83,10 | 110 |
| 40W | Öhlins 1316 | 98,00 | – |
| 20W | Fox Racing Oil | 98,90 | 137,9 |
| 15W | Silkolene RSF 15 | 99,00 | – |
| 20W | ELF Fork Oil | 99,00 | 150 |
| 20W | Wilbers TF Fork Oil | 99,40 | – |
| 20W | Putoline HPX R | 99,40 | 155 |
| 20W | Fox 20WT Gold | 100,00 | – |
| Öhlins 1325 | 100,00 | – | |
| 30W | Silkolene SF 30 | 100,00 | – |
| 30W | IPONE Fork Oil 30 | 102,90 | 106 |
Why Choosing the Wrong Oil Changes Everything
Fork oil doesn’t just lubricate.
👉 It directly controls damping.
That means:
- Thicker oil = slower suspension movement
- Thinner oil = faster movement
Sounds simple… but here’s where most riders mess up:
👉 They change oil… without adjusting clickers or understanding damping balance.
Result?
- Loss of grip
- Harsh suspension
- Bouncing front end
This is why oil selection and suspension setup must go together.
Stop Swapping Oils. Start Understanding Suspension.
If you’re checking oil equivalence charts, you already care about doing things right.
But charts won’t teach you how your suspension actually works.
👉 And without that, every oil change is just trial and error.
→ Motorcycle Suspension Adjustment Course
https://motoiservices.com/en/motorcycle-suspension-adjustment-course/
Inside the course:
- How to choose the correct oil (based on real data, not labels)
- How viscosity affects compression & rebound
- How to adjust your suspension step by step
This is the difference between guessing… and actually tuning your bike.
FAQ
Are fork oil brands interchangeable?
Not exactly. Even if labeled the same (5W, 10W), their real viscosity can differ significantly.
What is the most accurate way to compare fork oils?
By checking their viscosity in centistokes (cSt), not the “W” rating.
Can wrong fork oil damage suspension performance?
Yes. It can drastically affect damping behavior and bike stability.
Your favourite oil is missing?
Can’t find your favourite oil? Leave us a comment and we will add it to the list!
60 Responses
Hello, could it be possible to add the Liqui Moly fork oil range? Regards
Hi Fernando,
The Liqui Moly suspension oils have been added to the list.
Thanks!
Could you add the Nitron 02 fork oil?
Hi Ed!
Job done! Nitron 02 included in the chart.
Regards!
Can you add the YSS 10w to the list? Thanks!
Hi Michael,
We couldn’t find YSS suspension oils anywhere.
Do you have a link to them?
Regards
Please can you add Repsol Qualifier: https://lubricants.repsol.com/content/dam/repsol-corporate/en_gb/productos-y-servicios/lubricantes-documentos/qualifier-fork-oil-5w-10w-en.pdf
Hello, can you add KYB K2C and if possible old KYB 01?
Hi Calvin,
Added those couple of KYB oils to the list.
Thanks!
Just verified that Putoline HPX R 15W is not 66,80 but 62,70 and Putoline HPX R 20W is not 99,40 but 94,50! Did they changed that over time, or this is a mistake? https://www.putoline.com/en/catalogue/maintenance/
Hi!
We always take the viscosity from manufacturer website or Material Safety Data Sheet, what’s available. We have found on several manufacturers that they slightly change the kinematic viscosity of their products, as in the example of Putoline. This can be by an oil supplier change or additive packages change (by any possible reason). We will check the Putoline range as 4cst is a big difference in viscosity for a product labeled with the same name. Thanks mate!
Hi
I am in Iceland and the average temperature is around 10C° in the summer and 3,75C° for the hole year. my bike should use 4W now I am using Motul 5W (4W is not available in Iceland) and I think it is to firm.
If I go down to Motul 2,5W will that compensate for this low temperature here in Iceland.
Temperature effect on oil.
Hi Kristbjorn!
True, oil viscosity varies according to temperature. Frankly speaking, I have never thought on changing the oil spec for extreme conditions, thanks for pointing that out.
In your case, check the original oil viscosity in cst’s and lower it 5 to 8 cst’s.
For example, if the suggested oil by the manufacturer is 19cst@20°C, go to 14cst as a starting point.
Don’t rely on the weight shown in the oil’s bottle because as you can see in the chart, it has no relation between brands.
Hope this helps!
Hello, can You add Honda/Showa SS-55 oil? Honda CBR 600RR 2005 front fork.
Hi Michal!
I have never seen the SS-55 oil and neither can find any reference to it. I looked on Showa’s Safety Data Sheets and this oil doesn’t appear (or I was unable to find it).
This Showa fork was used by other manufacturers, and although they were using different shim stacks, they were not using SS-55.
Do you have the service manual to check the exact oil it is using?
Hi again Michal,
I could find it, but it’s branded by Honda (not Showa), that’s why I was lost.
It is somewhere between 30 and 35cst @40 Celsius.
Look in the chart for something in between those numbers.
Will add it to the chart when I find the exact cst’s.
Regards!
Hello, could it be possible to add the BMW Fork Oil Type 4 ? parts number: 83192470714
It is used for example in: BMW K80 (F 750 GS, F 800 GS), BMW K81 (F 850 GS, F 900 GS), BMW K82 (F 850 GS Adv., F 900 GS Adv.), BMW K83 (F 900 R), BMW K84 (F 900 XR)Regards and other
Hello, could it be possible to add the BMW Fork Oil Type 4 ? parts number: 83192470714
It is used for example in: BMW K80 (F 750 GS, F 800 GS), BMW K81 (F 850 GS, F 900 GS), BMW K82 (F 850 GS Adv., F 900 GS Adv.), BMW K83 (F 900 R), BMW K84 (F 900 XR)Regards and other
Hi Tomasz,
Seems impossible to get the data from BMW’s oils. I’ve been looking for it for three days with no success. On the other side, I think it’s not 100% legal in Europe hiding the Safety Data Sheet with the oil specs.
I will search more, but wanted to give you a reply.
Regards!
Hello, can you add Valvoline 5, 10, 15?
Hi Arek!
Valvoline oils added. Thankx!!
Could you please add the Blud Suspension fluids?
Thanks
Hi Mark!
I got in contact with Blud guys asking for kinematic viscosity for their range of suspension oils. Unfortunately, after a couple of weeks they didn’t reply to me, so I guess I will never have a reply from their side. Will try to find the data using other ways of search…
Please add hyperpro oil which is another great mystery
Hi Garry!
We have been searching for Hyperpro oils properties and, as you mention, seems to be a great mistery.
By legislation the material safety data should be published, but looks like the original oil manufacturer is different to Hyperpro and couldn’t find the original one yet.
Will keep pushing. Sorry!
WP posiada w swojej ofercie również olej 4W.
Olej jest stosowany do teleskopów w KTM EXC.
Czy mógłbym prosić o zamieszczenie go w tabeli?
Witam!
KTM używa olejów do zawieszeń Motorex. Olej 4W, o którym wspomniałeś, jest wymieniony w tabeli:
4W Motorex Racing Fork Oil 16,00 250
Jedyny olej WP jaki znaleźliśmy to olej do tylnego amortyzatora, ale z tego co wiemy WP nie prowadzi aktywnej sprzedaży olejów, więc rozumiemy, że oni też używają Motorexa.
Użytkownicy KTM używają tego oleju 4W bez żadnych problemów.
Pozdrawiamy!
Kupiłem Motorex Racing Fork Oil 4W, ale ma czerwonawy kolor. Olej WP kupowany w KTM był zawsze bezbarwny.
Trochę nie chce mi się wierzyć, że dodatkowo barwią ten olej gdy jest wlewany do butelek Motorex.
Cześć!
Marki olejów często używają barwników, a nawet aromatów, aby odróżnić swoje oleje od olejów konkurencji.
Na przykład oleje Öhlins są żółte, oleje RaceTech są niebieskie, inne są zielone, jeszcze inne są czerwone…. To kwestia marki, wydajność oleju nie różni się, nie martw się.
Please add the Yamalube S1 and M1. Thank you.
What about USF-05 FORK FLUID from Racetech
Hi Matthew! As commented on the Facebook post, it should be nearly a top secret. We don’t understand why, but we have been asking for the last 10 years to race tech for their fluids cst’s.
As long as we can’t compare them with OEM oils, we are not using them.
We are not saying they are not good fork fluid oils, they work pretty well when using gold valves, but …. We will ask again anyway!
Hi Daniel,
Looks like the Yamalube S1 is an “old” oil (2007) that is no longer available. It’s meant to be very light, but couldn’t find the exact kinematic viscosity.
The M1 is listed, and it’s the old KYB 01M (15,8cst). Will add the newest range of Yamalube front fork oils.
Thanks!!
Putoline advises atf oil for my Honda CBR1100XX Blackbird from ’98. Here are the codes, can you add this one as well?
SKU
70021#P
Barcode
871012870021
Putoline HPX R 7.5 has changed since 2025, their other viscosities might changed as well. PF.20.13
Please add SRAM Maxima mineral brake fluid.
Jmc oils
Hi, is it possible to add the champion vorkoil range?
Thanks
can you add Ktech oils?
Hi!
Added K-Tech oils! I could only find a 5w for front forks and a 2,5W for shocks. They have not published the tech data for those oils, so viscosity index is not mentioned.
Hope it helps!
Hi Kevin!
After some search I couldn’t find those oils anywhere.
Are they sold under a different brand?
Regards!
Buen aporte, gracias
Hi, the champion lubes is a Belgian brand. It is sold in Europe.
Thanks
Hi Kevin, thanks! I found them and have been included in the chart, so now you can compare them with other oils easily.
Thanks for your support!!!
Good day guys. How about adding Race Tech Ultra Slick USF-05 (5w)? Thanks in advance.
Hi, I’m in Australia, not having much success trying to find Suzuki LO6, its for a ’23 Suzuki GSX8S (naked)
Hi Ray!
Ecstar L06 fork oil is 16.31 cst (40 ℃).
Will add it to the list for future visits!
Thanks!
hi Good day,Sir. my 2009 suzuki boulevard m90 require 5w suzuki fork oil. is it true that i can replace to use a 15w fork oil in my bike. im from the caribbean, road conditions are not same as in the US or Canada. because i just change my fork oil seal last January 2025, now its starting to leak. needs your advise. I highly appreciated for your advised.
Could you add the viscosity for Fox 4wt suspension oil?
I see three entries for “10W Maxima Plush Damping Fluid” with different viscosities. Is there a difference betweeen the three? Same for 7W Maxima fluid.
For suzuki DR650RS 1992 what fork oil should i use (i live in greece)
SS-47 Kawasaki 10wt. Kawasaki Versys 1000 SE with electronic forks
Hi, is it possible to add the WP ( White Power ) oil range?
Thanks
Hi Leandro!
WP do not publish their oils viscosities but as long as they work close to Motorex (the 4W was designed specifically for WP) guide yourself with the Motorex range, if it’s not exactly the same is so close that you won’t notice any difference.
Thanks for your comment!
Something like Kawasaki oils, for example Endurance 2F and others from Kawasaki.
Any luck getting numbers for BMW Type 4?
Any info on bitubo fork oil. I have an unopened bottle from my motorcycle. What come stock on the fox 34 factory with the grip 2 damp.
And what about mixing oils ?
I’ve mixed 2 different viscosity oils to match the original oil’s viscosity buy calculating the precise proportion of each one.
In theory same viscosity, but sometimes the damper feels way stiffer (sometines it’s perfectly OK).
Any explanation ?
Hi Chris!
The theory is that oils should be miscible with one another, at least when it comes to engine oils.
It’s possible that in this case they aren’t 100% miscible; you haven’t told us whether you’ve mixed oils from the same brand (in which case they should be fully compatible).
I recommend using a single oil without mixing, as was done years ago. Nowadays we have a much wider range of viscosities and grades available, and it isn’t expensive.
That random behaviour suggests to me that:
a. The oils are not miscible
b. You have something loose inside your suspension
We hope we’ve been able to help.
You will find more info about suspension setup and maintenance in our online course: https://motoiservices.com/en/motorcycle-suspension-adjustment-course/
Best regards!
Hi Chris!
This is the first time I’ve heard that Bitubo sells oils.
It must be a re-bottled product, because I can’t find a Technical Data Sheet for any Bitubo suspension oil.
Could you send us a photo via WhatsApp of the unopened bottle you have?
Best regards!