Home
Verdict: 
Smooth-running bearings and keeps the water out – what more could you want?
Weight: 
66g

Smooth-running bearings and a creak-free fit are all you can ask from a BB, and that is what I'm getting from the Easton PF86 30mm Bottom Bracket. It looks to be well sealed, so longevity should help justify the price.

  • Pros: Smooth bearings
  • Cons: Large diameter inner sleeve might not work with internal cable guides

The Easton PF86 bottom bracket has been designed to work with its new EC90 SL cranks and 30mm spindle, which you can read my review of separately here. Don't worry if your bike isn't PF86 as all the other options are catered for too.

> Find your nearest dealer here

Easton says that it has developed a seal that achieves a low level of drag while still keeping the elements out, and even though the test period has been pretty dry I have been out in the rain as much as possible to check for water ingress and creaking of the cups in the frame.

Easton PF86 30mm Bottom Bracket - 2.jpg

So far, nothing to report after about 400 miles, but I'll see if I can run the setup long term and update the review if I have any issues.

Easton_Press_Fit_30mm_BB_Fitted_1.jpg

Fitting was a pretty simple affair thanks to some detailed technical drawings from Easton. The only real issue for me was the fact that the inner sleeve is quite a large diameter and clashed with the internal guides inside my frame. Thankfully, if uncovered the spindle wouldn't get anywhere near the cables, so that was how I fitted it. It won't affect all frames but it is worth bearing in mind.

Easton_Press_Fit_30mm_BB_Cables.jpg

The only thing to question really is the price. Compare the Easton BB's £59.99 with the likes of Shimano's press-fit units coming in at around 20 quid, and you have to wonder why; after all, they are pretty reliable from personal experience. The Praxis M30 BB will set you back around £35 for a BB86 setup, although something similar from Hope is above £100.

Easton_Press_Fit_30mm_BB_Fitted_2.jpg

As it stands I can't see any real issues with the Easton PF86 and I'm not really expecting that to change. I've had press-fit bottom brackets creak after one ride in the rain on some test bikes, and the fact that the Easton is still running quietly in my B'Twin Ultra CF frame gives me every confidence it'll stay that way.

Verdict

Smooth-running bearings and keeps the water out – what more could you want?

If you're thinking of buying this product using a cashback deal why not use the road.cc Top Cashback page and get some top cashback while helping to support your favourite independent cycling website

road.cc test report

Make and model: Easton PF86 30mm Bottom Bracket

Size tested: 86.5mm

Tell us what the product is for and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?

Easton says, "Easton Bottom Brackets have been developed for use in combination with our new Easton EC90 SL crankset. Bottom Brackets are an essential part of the bicycle that is often overlooked and forgotten, but we saw the BB as another opportunity for performance gains and improved efficiency. Typically with any bearing there is a tradeoff between protecting the bearing internals for longevity and bearing seal drag which impact efficiency.

"For our new BB we have developed a seal that achieves a very low level of seal drag while still retaining excellent protection qualities. Our in-house testing procedure included developing a 24 hour continuous water invasion test, essentially pouring water into the side of the spinning bearings for an entire day continuously. And our new seal proved to have excellent contaminant exclusion. Combining those results with extensive real-world testing, we are confident of the seal's performance and overall BB durability while being impressed by the overall efficiency. We then used a new thinner and low viscosity bearing grease and modified the percentage of grease fill to again find the perfect balance between durability and minimized running friction. We found that a thinner grease, with the correct fill level, was more durable than a thicker grease when spinning at high speed. A thicker lubricant under the centrifugal force would be thrown to the outer bearing race where it would stick and not return to the inner race under lower speeds, leaving it susceptible to increased operating temperatures and higher wear. If you're running the best crankset on the market, you should have the performance BB to match."

It is a top quality bottom bracket that befits the crankset it is designed to work with.

Tell us some more about the technical aspects of the product?

Easton lists:

Type - BB86.

Compatibility - 41mm Press fit, 30mm Spindle.

Weight - 66g.

Size - 86.5mm.

Rate the product for quality of construction:
 
8/10
Rate the product for performance:
 
8/10
Rate the product for durability:
 
8/10
Rate the product for weight (if applicable)
 
8/10
Rate the product for value:
 
4/10

The price is a little high but in the right ball park. It's cheaper than a Hope equivalent.

Tell us how the product performed overall when used for its designed purpose

Runs smoothly and keeps the elements out.

Tell us what you particularly liked about the product

Smooth-running bearings.

Tell us what you particularly disliked about the product

The inner sleeve could have a smaller diameter.

Did you enjoy using the product? Yes

Would you consider buying the product? Yes

Would you recommend the product to a friend? Yes

Use this box to explain your overall score

The Easton bottom bracket has worked well at avoiding the issues found with press-fit bottom brackets. There has been no creaking or water ingress to date.

Overall rating: 8/10

About the tester

Age: 40  Height: 180cm  Weight: 76kg

I usually ride: This month's test bike  My best bike is: B'Twin Ultra CF draped in the latest bling test components

I've been riding for: Over 20 years  I ride: Every day  I would class myself as: Expert

I regularly do the following types of riding: time trialling, commuting, club rides, sportives, fixed/singlespeed

Stu knocked out his first road.cc review back in 2009 and since then he's chucked the best part of seventy test bikes around the West Country, a couple of them quite literally! With three alloy and two steel bikes in his fleet he's definitely a metal man (that'll be the engineering background) but is slowly warming to that modern carbon fibre stuff along with fat tyres & disc brakes.
It's not all nostalgia though, after spending the last few years in product design Stu keeps banging on about how 3D printing is going to be the next big thing and he's a sucker for a beautiful paint job too.

4 comments

Avatar
Disfunctional_T... [438 posts] 1 month ago
0 likes

The tiny bearings needed to allow a 30 mm crank to fit in a BB86 shell are just a bad idea. The bearings have very low static and dynamic load ratings. You should either:
1. Use a 24 mm spindle crankset such as a Shimano one
OR
2. Purchase a bike with a bottom bracket shell such as BB386EVO that properly supports 30 mm spindle cranks

Avatar
Efe M. Balli [15 posts] 1 month ago
0 likes

Probably true, but how many sets of bearings or entire BB's can you buy for the cost of a frame replacement?
One of my bikes has a PF86 and I've been considering switching both bikes to BB30 to run a Quarq crank and swap the power meter between bikes.

Avatar
CXR94Di2 [2691 posts] 1 month ago
0 likes

Dont buy bikes with pressfit or within a short while, you will be investing in an adaptor BB from the likes of Hope, Praxis, Wheelsmanufacturing etc.... to correct the creaking

Factor £100 ontop of bike price if you do!  4

 

Avatar
Disfunctional_T... [438 posts] 1 month ago
0 likes

In the close-up photo of the the bottom bracket shell area, what are all those holes in the material??? I honestly don't know what I am looking at. Worst carbon fiber ever? It looks like corkboard.