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Shimano Dura-Ace SL-7800 Lever Boss Cover for Light Alloy Frame - Y64343000

Customer Reviews (4)
5 / 5| Write your review
£3.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
For use with Shimano Dura-Ace SL-7800 10 speed shifters.

This Lever Boss Cover can also be used on the following shifters:

- Shimano Dura-Ace SL-BS77
- Shimano 600 Ultegra SL-BS64
- Shimano SL-BS50
- Shimano Dura-Ace SL-7900
- Shimano Dura-Ace SL-7700
- Shimano Dura-Ace SL-7402-8FCAI
- Shimano Dura-Ace SL-7401-7FCAI
- Shimano Dura-Ace SL-7400-6FCAI
- Shimano 600 Ultegra SL-6401
- Shimano 600 Ultegra SL-6400
- Shimano 600EX SL-6208
- Shimano 105SC SL-1056
- Shimano 105SC SL-1055
- Shimano RX100 SL-A551
- Shimano RSX SL-A410
- Shimano SL-R400
- Shimano SL-S434
- Shimano SL-S424
- Shimano Sante SL-5000

These are an "A" match which indicates that the parts are the same in materials, appearance, finish & size etc.

Genuine Shimano replacement part.
Product Reviews (4)
Questions & Answers (5) Q & A
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Product Reviews (4)
Overall Product Rating 5 / 5
Perfect For Old Alloy Frames.
By lmarcini
13 Mar 2013
5 / 5
I recommend this product
ProsQuality and expensive.
Works perfectly with Shimano SL7402 levers on a Vitus 979 frame. Don't forget to order a pair!
You Could Not Get These 25 Years Ago!
By Michael
02 Oct 2012
5 / 5
I recommend this product
Prosgood quality
Even though it is a new part, it is not out place with all the retro gear on my Vitus 979. Only now can I rebuild it to the standards I wanted 25 years ago when I bought the original bike. You could not get these 25 years ago!
Neat Solution To Simple Problem.
By Paul,Derbys 19/4/12
19 Apr 2012
5 / 5
I recommend this product
ProsPerfect Finish
Needed these for my SJSC thumb shifter brackets(see review).My 105 D/T shifterscome with curved back not flat like these.Result?Looks the part when assembled 100%.
Shimano Sl-6028
By Rob
10 Apr 2012
5 / 5
I recommend this product
ProsHigh quality
The final required parts for my recent Cannondale build. You will need these is you want to run down tube shifters on a large diameter down tube with flat shifter bosses. Make sure you order 2. Wor
Questions & Answers (5)
I need two Shimano Dura-Ace SL-7800 Lever Boss Cover for Light Alloy Frame - Y64343000.
02 Oct 2018
I need two Shimano Dura-Ace SL-7800 Lever Boss Cover for Light Alloy Frame - Y64343000. It seems you have one in stock. Can you bring me another one?
We currently, at time of writing, have more on order!

Compatibility with Campagnolo braze on bosses.
09 Apr 2018
Will this boss cover allow me to use my Dura Ave 7 speed indexed levers on the brazed on bosses on a vintage Raleigh SBDU frame? Or even a late 70's MKM for that matter?
Hi there,

Yes this should be suitable for those.

Compatible With Shimano Sl7900
17 May 2016
Hi, Would those be compatible with SL7900 (10 speed) down tube shifters? The ones supplied with the levers are curved and do not fit the bosses of a Cannondale CAAD3. Thanks.

These Lever boss covers should indeed work fine with your SL-7900 down tube shifters.

Same As Lever Boss Cover For Bar End Shifter Sl Bs77?
01 Dec 2015
I miss the lever boss covers for my bar end shifters sl bs77. According to manufactor part no. it should be this item. Can you confirm, or am I wrong?


As the part numbers match up this is indeed the same product as you require for your SL-BS77 shifters.

Will This Work With Paul Components Thumbies And Shimano Shifters
15 Oct 2013
I have recently bought from you a set of Paul C. thumbies and I wonder if this boss cover will work with bar end shifters.

You don't need the lever boss cover to use bar-end shifters with the Paul C thumbies, they have been designed around bar-end shifters. This lever boss cover is designed to convert down tube shifters to the same fixing as bar-end shifters.