Light Mount (Seat Post Mimic)


The accessory made for AeroPack (carbon or alloy), and all AP20 Trunk Top Bag purchases. This light mount mimics your seat post, allowing you to attach lights directly to the bag, and stay more visible. For assembly instructions, click here.

Click here for the fixed light mount fitting.

Weight 34.8g


In stock

Top tip: Try searching for your bike make/model below to find others using this product on your bike.

Customer Reviews

Based on 95 reviews
Adam Wilson (AU)
Bike: Giant AR1 Contend
Riding Style: Commuting

Perfect for seatpost lights. Highly recommend getting this.

ChrisW (GB)
Bike: J Laverack GRiT
Riding Style: Commuting, Other
Premium Pannier System that is Definitely VFM

Bought the rack and Trunk Bag in September and the Panniers in October. What a great system. Oozes quality. The practicability of being able to switch between bikes is brilliant - have a thro axle on one and the mount attachments on the other. Both work superbly and switch over in seconds. Bags hold firm and carry everything I need for work and more. Use panniers more than trunk bag for work and trunk bag for leisure. They are robust, very waterproof (as discovered the last week), and a decent size. Laptop fits securely in pannier insert pocket. Bought light accessory which makes thing much easier in the Winter when using trunk bag - simple but effective.
Price overall may be an issue for some. All I can say is that I do not feel cheated in any way, shape or form. They say you get what you pay for and these are definitely top notch. The blurb says they work best as a system and I can see it - spacious, secure, robust but light, and versatile. Whilst other accessories are cheaper, they do not offer the same level of integration and flexibility. And the panniers themselves are similar in price to other premium panniers from manufacturers such as Ortleib etc.
Definitely recommend and as I move into bike packing next summer, will be looking for some more ……..

Terry Reis (GB)
Bike: Giant Fathom E+ 29 2 eMtb
Riding Style: Bikepacking, MTB
Excellent Rack and Pannier system

Great service from the time I ordered. Fits very easily to me bike, will probably leave it on all the time as it doesn’t dominate the bike like racks I have had before. I had a problem with one part and Tailfin’s customer service went above and beyond to help me out, they are a company that very firmly stands behind their product and goes the extra mile to ensure you are happy with. Will be buying a second set for my wife’s bike.