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Busch & Muller Secula Rear Light - Mudguard Fitting

Customer Reviews (3)
4 / 5| Write your review
Product Reviews (3)
Questions & Answers (4) Q & A
New for 2016, this is the battery version of the popular Secula mudguard mounted dynamo light. This light is compact and incorporates the LineTec technology. A prism system which creates an exceptionally bright light crown powered by one high powered LED which is very distinctive due to its 'spatial' shape. This enables other traffic participants to better estimate the distance to the bicycle. The elegant transparent glass on the circumference shines bright red when in use. It also has a centrally integrated rear reflector and is supplied with 2 x AAA batteries.

LineTec - Light strip for more safety

LineTec is a light technology featuring a lens system designed by B&M. The punctual light of one high power LED is spread up to become a wide strip of light which shines homogenously. Why is that important? In the past, as another road user approached a bicycle at night from behind all that could be seen was a single point of light emitting from the rear light. This meant that the distance to the rider could only be estimated inadequately. B&M wanted to address the need to accurately estimate this distance providing a capacity for the human eye to register the spatial relationship to the rider, especially in the dark. Hence LineTec was created. A rear light sending out a LineTec light strip emits 'spatial light' allowing other road users to estimate the distance to the rider much better and more quickly.

- Mudguard mounted
- Single high powered LED
- Exceptionally bright LineTec light crown
- Centrally integrated rear reflector
- Compact casing 38 x 55mm
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Product Reviews (3)
Overall Product Rating 4 / 5
Bright, But Very Eay To Turn-On Accidently
27 Jun 2017
3 / 5
ConsToo easy to accidently turn it on.
ProsBright and permanently attached.
This light is very bright and permanently attached to my mudguard, so always ready. This was the main attraction.

However, it is very easy to accidently turn it on. Just moving the bike around the shed or when parking, it only takes the slightest knock to turn it on. I think that this is a design flaw.
Neat Rear Light
04 Apr 2017
4 / 5
I recommend this product
ConsOnly on or off - no flashng mode
ProsSmall and light
As previous reviewer has said, pretty easy to mount. I made an additional small hole in the SKS mudguard with my penknife for the little plastic lug at the rear of the light (stops it swivelling when you tighten the mounting nut). It's on my wife's bike but I shall certainly be adding one to mine soon.
Very Good Product
28 Oct 2016
5 / 5
I recommend this product
ProsCompact, well made and highly visible.
I was fed up with having to unclip my rear light every time I locked my bike up and so having a neat, fixed option works very well. It also means there is always a light ready to use when I get caught out by the earlier dark evenings.
Questions & Answers (4)
Could This Be Fitted In Place Of The Existing Reflector On Sks Mudguards?
01 Jul 2017
The existing reflector seems to be in the exact place you would want to fit this light (i.e. at the lowest fixing.) It also seems to be riveted in place. Is there a trick to remove the reflector and fit this light?

The rivets on the mudguard are only for the mounts, The reflector is in fact screwed in from behind. If this screw is removed it will come off. The light in question will fit on to these mudguards.

Part No.
27 Nov 2016
According to the B&M website the part no. of what you describe should be 331BS?

This is just the part number that comes from our supplier, this is the same light as shown on B&M's website.

Modes On B&M Secula Mudguard Battery
27 Nov 2016
Modes on your part number 398111? Apart from on/off, does it have standlight, senso or flashing? Also, what batteries?

This light is permanently on so it does not have a flashing or senso function, also as it is permanently on it does not have a standlight function. This light requires two AAA batteries, there is a set supplied.

Hi, Does This Item Fit The 2 Holes On Sks Mudguards?
03 Dec 2015

This light should be able to fit to the holes already in your SKS mudguards, but if it is required you are able to drill additional holes into SKS mudguards to provide additional mounting positions.