[Upgrade Focus.2] Bromptom Chain Tensioner & Pulleys - Make your bike more beautiful with metal components!

BIKEfun Designing parts for Brompton become more than those for Birdy rapidly.

And the Chain Tensioner was the first BIKEfun Designing part for Brompton.

We have designed a series of components for Bromptom with our Partners.

 

With the growing amount of the components,

BIKEfun leads you to discover them by going through different parts of the bike.

And show you how Brompton can be improved! 

Upgrade fever!~~~~~~~~~~~~~~~~~

 

 

You may never pay attention to the original chain tensioner and pulleys on your Brompton,

they are made of plastic and colored black. This is the consequence of cost down.

BIKEfun believes that you are not satisfied with those cost down plastic componentsbecause your partner is a classic English made imported folding bike instead of a cheap commuting bike.

Therefore, BIKEfun designed the metal Chain Tensioner:

Aluminum appeared with 19th Century's classic style through CNC processing.

Two versions are provided:

For Double-speed (2,4,6) and for Single-speed (1,3,5)

 

Each of them in four different colors:

Coppery / Silver / Black / Ti-Color

Price: 3,500 TWD

 

[Coppery]

Suggested on varnish, black bikes.

[Silver] Attention! Silver Chain Tensioner is made ​​from gray (top) and silver (lower) two-color combination!

Suggested on white, pink bikes.

 

[Black]

Suggested on black, bright color (Yellow, Orange ) bikes.

 

Super Light Edition (Ti-Color) ]

Special designed for Ti Bromptons.

The color and texture almost the same as the titanium on the frame.

完全針對(鈦布) 鈦合金brompton車款所設計的特別版張力器,

陽極顏色與噴砂質感幾乎跟車架上的鈦合金顏色一致

Use aluminum to make better appearance and strenth than the original plastic tensioner.

SL version have lighter weight due to special CNC process.

The weight is 20% less than the standard BIKEfun tensioner - only 125g / set.

 

If you cares a lot about the weight of your Brompton,

we strongly recommend this tensioner for you.

for 2, 6 speed Bromptons

Super Light Edition(Ti-Color), Price:4,000 TWD

 

 

 

If you really like the metal style,

you may want it even better.

 

 

Perhaps you also want to change the plastic original pulleys.

 

BIKEfun provides aluminum pulleys for you to make it whole!

Like this:

Combine the chain tensioner and pulleys.

 

 

 

The pulleys have same options provided as for the chain tensioners :

 

Two versions:

For Double-speed (2,4,6). Price: 2,000 TWD / pair

For Single-speed (1,3,5). Price: 2,000 TWD / pair 

 

Designs:

Raytheon

 

Three colors:

Titanium clolor / Black / Coppery (Silver Sold out)

 

 

 

 

 

 

 

 

Pulleys for double-speed Bromptons need to work well when shifting!

 

Therefore, BIKEfun designed oil channels inside the pulleys for grease to stay and lubricate when they roll.

In contrast with those pulleys without the oil channels, BIKEfun's pulleys works with less resistance and noise.

 

 

Check this out! 

One tiny change of your Brompton made it looks better than before!

 

Beautiful!

 

 

 

YouTube video shows how the Double-speed version components works: (Very smooth)

 

 

 

 

Single-speed version have different structure with the double-speed version.

Two Designs:

Union Jack (Flag) / 1976 gramophone record

 

Three colors:

Coppery / Silver / Black (Limited edition)

 

 

Here's the before-after comparison:

[Front]

 

[Back]

YouTube video shows how the Single-speed version components works:

 

 

 

Finally, BIKEfun appreciates the support from all of you!

During the progress of designing bike components, we met a lot of problems and difficulties, it is because of your support that we could make it success.

We hope that we can keep on doing this for every bike owner to make their bike better than ever!

 

 

Chain Tensioner + Pulley Assembly Installation:

_________________________________________________________________________

 
BIKEfun modified set of Chain Tensioner + Pulleys for Brompton 
 
We designed the excellent quality chain tensioner with high precision and made of aluminum alloy by CNC processing.
 
Now there is the devil hidden in the detail, BIKEfun add the Titanium alloy spring in chain tensioner !
 
 
Let you very easy upgrade your Brompton’s chain tensioner system.
And we also extend the length of axises to fit the 3 or 4 speed modified cassette.
 
 
The BIKEfun modified set are include:
1. Chain Tensioner *1
2. Titanium Alloy Spring *1
3. Stainless Steel Axis *3
4. Anti-loose Stainless Steel Bolt *3
5. Stainless Steel Washer *1
6. Pulley *2
 
Whole set weight 220g.
Price: 5,200 TWD

 

 

You might also like...

[Upgrade Focus.1] Brompton light-weight aluminum and polished titanium seat posts. Let your Brompton lighter! Seat post upgrade!

[Upgrade Focus.3] Brompton dampers. The Stirling damper and The IC. classic copper damper!

[Upgrade Focus.4] Easy Wheel Upgrade! Moves more easily, Stands still! Here is the origin of Brompton improvement!

 

 

 

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