Matumura Kohki Scrowave Suspension Spring

Well made and transforms the ride-however the spring guide is way off, at approx 82Kgs riding weight I went for the firm version, this was far too stiff and gave a harsh rigid ride, the change over to the softer version still gave a stiff ride but with a little more compliance, these springs are expensive so consider this 'upgrade' carefully!

I recommend this product

great upgrade part, works really well, U can feel deference straight away

I recommend this product

This is a great addition to the Brompton. I have a B75 and it could feel harsh at times. I weigh just under 70kg so was unsure which spring to go for, but went for firm in the end as I like a responsive ride. I have no regrets - the bike is so much better over bumps now, with seemingly better grip as a result. Cornering is also a lot more fun as I guess that's when the spring really comes into action. I've touched down with the pedals a few times as a result as I must be leaning further. Well worth it if you can afford it.

I recommend this product

Having done a 1000km on my 2 speed Ive just changed to this. There is a night and day difference to the feel of the bike. As said by others already it makes the ride plush, removes all the bob and sharpens up the handling - cornering is particularly improved. I weigh 85kg so obviously got the firmer version.

I recommend this product

A very well made upgrade. Looks fantastic on the bike.
I am just over 70kg and have the firm version (3 spring). The ride is very firm - no discernible bounce at all, making the ride very positive.
Really easy to fit.

I recommend this product

This is simply a must for any Brompton ,it makes the ride far better , reduces bob and bounce and allows the bike to corner better and is easy to fit

I recommend this product

This is the single best upgrade for Brompton performance, bar none, it cures so many issues with the weak rear axle on the bike. The improvement in ride is dramatic.

I bought the Firm as an 81kg rider, but I’m now also tempted to try the Soft. It is vastly better than the stock Brompton part and very easy to fit (10mm socket only, if I remember correctly).

The more compliant rear axle helps to overcome the inherently weak rear axle due to the very rearwards rider centre of mass and the small tyres. Not only does ride improve, making it more comfortable, the increased stability allows for more aggressive braking and cornering, and some ride can be cashed in for higher tyre pressures.

There are no negatives to this parts. It is also the best value for money Brompton upgrade.

I recommend this product

I went for the harder version. The spring looks amazing. Certainly adds a more bling to the Brompton. The ride is good, but a little softer than I expected.