GIVI E251 Universal Monokey Topcase Mounting Kit

FALCONSEYE

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May 16, 2013
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53
Has anybody installed this thing on a stock rear plate? If so, any recommendations on the install?
 

Squibb

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Aug 10, 2014
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It can be done, but IIRC you will end up with a frail rack set-up. OK for say a lightweight helmet storage box, but not for any serious loads.

This is how Givi fit the SRA2101 rack, just as an example ............ https://media.givi.it/XN-Prodotti/istruzioni/SRA2101.pdf

For serious use, you may be better off with say an Altrider rack & givi fitting kit to suit your top box choice.
 

FALCONSEYE

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May 16, 2013
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53
@Squibb, Do I need to remove the factory plate to install this SRA2101 rack?

By the way, I returned the E251 and ordered an SRA2101. Also, does that 6kg rating include the top box weight?

GIVI OBKN42AA 42Ltr Outback Monokey Top Case already weighs at 4.12 kg.

Thanks
 

Crowberto

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May 11, 2020
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I know this is old. But if anyone sees the thread i wanted to confirm the stock mounting bracket is actually pretty strong. And there really shouldnt be an issue since you dont want to put much weight all the way back there anyway.

I had the givi on the stock bracket. Instructions that cane with the givi were easy. Spacers were a bit of a pain to work with.
 

Squibb

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I know this is old. But if anyone sees the thread i wanted to confirm the stock mounting bracket is actually pretty strong. And there really shouldnt be an issue since you dont want to put much weight all the way back there anyway.

I had the givi on the stock bracket. Instructions that cane with the givi were easy. Spacers were a bit of a pain to work with.
I'm, not entirely clear about your exact set up.

Your Owner's Manual describes the standard rear carrier, under 'instrument & control functions' page 3-42 for my ES. This has a load rating of 5Kg. A few have attached a Givi universal rack to the carrier, just to take a storage box for use when parked. Others have removed the OE carrier & mounted a universal plate, with suitable spacers to the rear sub-frame. Always remember the max load for the bike is 205Kg (452lb).

Then there is the SRA2101 Givi alloy rack described, with a link to the fitting instructions, in post #2. This has a load rating of 6Kg & has a very neat appearance, but they do leave a pillion rider short on space, so many have re-engineered the mounts to move the plate backwards slightly.

Then comes the SR371, with a load rating sticker near the latch point of 10Kg ........ https://media.givi.it/XN-Prodotti/istruzioni/SR371.pdf
These are good racks, but again leave space tight if you carry a regular pillion.

One of the after market alternatives, that overcomes the issue for me, is the Altrider, with a 10Kg load rating. They don't come cheap though & a few early adopters had problems with cracking, said to be due to either over-loading or over-tightening the fixings; mine has been no problem though, but I do watch the load carefully.

I know all these load ratings may appear cautious, but heavy loads mounted behind the rear wheel spindle can lead to instability, so it's not just the pure strength of the plate, or the sub-frame, that has to be considered.
 

Crowberto

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May 11, 2020
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I'm saying that all of the load ratings are far overly cautious and there won't be a structural issue unless you load the rear case with an amount of weight that would severely impact the ride-ability of the bike as the front end would be lifted too high.

I was using the stock mount with givi plate and now have the alt rider system. Both are stronger than what you need. The weight on the stock system is loaded on the bolts and not the plastic mount (and even though its plastic, it's very strong, thick, rugged plastic).

Alt rider plate is significantly larger than givi which provides a lot more mounting points as well as space for accessories which was my main driver. The perceived increased structural load rating, I believe to be negligible. My perception that there is no material difference in load rating of these mounts comes from putting my weight on the stock mount to see if it would break.
 

Paletes3

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Jun 12, 2017
Messages
166
Location
Lisbon, Portugal
Any of these racks is fixed to the sub frame which extends considerably. Let’s not forget the lever effect or the “Law of the Lever”
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