S4R belt idler bearings

iainw · 27-12-2021, 09:55 AM

It's belt replacement time again on my 2005 S4R and I thought I'd do the idler bearings whilst I'm in there. The bike has done 17,000 miles and they've never been replaced .

Does anyone know the bearings sizes or numbers, they're not listed in the parts manual?

Cheers,
Iain

rollo22 · 27-12-2021, 11:48 AM

Contact Moto Rapido Winchester and mention UKMOC for your 10% discount.
Replaced my EVO idler and adjustable bearings and was £200 ish delivered.

https://www.motorcyclespareparts.eu/...rcycles/timing

Mr Gazza · 27-12-2021, 12:00 PM

Exactfit do belt and bearing kits, very competitively, but at 17000 miles they should be fine. Have anther look when the mileage has doubled.

Mine are sailing towards 50,000 with no bother. I left the new set on the shelf.

Dukedesmo · 27-12-2021, 12:09 PM

If they're like those on a 916 (6003-2RS C3) then they are readily available from bearing suppliers for around a fiver.

Remove the pulleys and you'll be able to read the part no. or at least get the dimensions from the old ones to be sure.

enbee23 · 27-12-2021, 12:56 PM

This is the Exactfit kit that you'd need for an S4R.

They claim that their belts are higher quality than OE. I'll be fitting them to my own bike when the time comes.

Mark64 · 27-12-2021, 09:28 PM

When you remove the belts spin the (free) bearing with your fingers, if it sounds like a rollerskate it's f*cked

Albie · 28-12-2021, 11:08 AM

Quote:

Originally Posted by Mark64

When you remove the belts spin the (free) bearing with your fingers, if it sounds like a rollerskate it's f*cked

I was going to suggest the same. No bearings are miles guaranteed it's about feel and sound. Any friction or tight spot or looseness is bin. You can get part number from the bearings to replace from good bearing suppliers. There are two stacked and you need to press out the pin. If your flush buy from a dealer though.

iainw · 28-12-2021, 02:46 PM

Thanks for the replies. I will be fitting Exact belts as I've used them before.

If it's going to be £200ish then they'll only be replaced if they're on their way out.

If I'm understanding the parts diagram correctly, are there two bearings for each roller?

Dukedesmo · 28-12-2021, 11:14 PM

£200 is Ducati pricing, less than £50 using quality bearings from a bearing supplier.

Your choice though....

350TSS · 29-12-2021, 11:52 AM

Simply Bearings is my go to supplier of bearings, seals and general engineering parts, easy to use web site with advice content and delivery in a couple of days.

https://simplybearings.co.uk/shop/p6...duct_info.html

iainw · 29-12-2021, 05:44 PM

Thanks Dukedesmo and 350TSS, that's what I'll do if they're needed.

27-12-2021, 09:55 AM	#1
iainw Registered User Join Date: Sep 2014 Location: Preston Bike: S4r Posts: 61	S4R belt idler bearings It's belt replacement time again on my 2005 S4R and I thought I'd do the idler bearings whilst I'm in there. The bike has done 17,000 miles and they've never been replaced . Does anyone know the bearings sizes or numbers, they're not listed in the parts manual? Cheers, Iain

27-12-2021, 11:48 AM	#2
rollo22 Moderator Join Date: Apr 2008 Location: Moreton-in-Marsh Bike: M1100evo Posts: 1,082	Contact Moto Rapido Winchester and mention UKMOC for your 10% discount. Replaced my EVO idler and adjustable bearings and was £200 ish delivered. https://www.motorcyclespareparts.eu/...rcycles/timing __________________ IF ALL ELSE FAILS READ THE INSTRUCTIONS Last edited by rollo22; 27-12-2021 at 01:32 PM..

27-12-2021, 12:00 PM	#3
Mr Gazza Lord of the Rings Join Date: May 2013 Location: Norwich Bike: M900sie Posts: 5,807	Exactfit do belt and bearing kits, very competitively, but at 17000 miles they should be fine. Have anther look when the mileage has doubled. Mine are sailing towards 50,000 with no bother. I left the new set on the shelf. __________________

27-12-2021, 12:09 PM	#4
Dukedesmo Registered User Join Date: Sep 2010 Location: Leics Bike: M900 Posts: 2,844	If they're like those on a 916 (6003-2RS C3) then they are readily available from bearing suppliers for around a fiver. Remove the pulleys and you'll be able to read the part no. or at least get the dimensions from the old ones to be sure. __________________ M900, 916, LeMans II.

28-12-2021, 11:14 PM	#9
Dukedesmo Registered User Join Date: Sep 2010 Location: Leics Bike: M900 Posts: 2,844	£200 is Ducati pricing, less than £50 using quality bearings from a bearing supplier. Your choice though.... __________________ M900, 916, LeMans II.

27-12-2021, 12:56 PM	#5
enbee23 Registered User Join Date: Sep 2020 Location: Nairn Bike: S4r Posts: 99	This is the Exactfit kit that you'd need for an S4R. They claim that their belts are higher quality than OE. I'll be fitting them to my own bike when the time comes.

27-12-2021, 09:28 PM	#6
Mark64 Bronze Member Join Date: Nov 2014 Location: Hondon de los Frailes Bike: S4r Posts: 286	When you remove the belts spin the (free) bearing with your fingers, if it sounds like a rollerskate it's f*cked

28-12-2021, 02:46 PM	#8
iainw Registered User Join Date: Sep 2014 Location: Preston Bike: S4r Posts: 61	Thanks for the replies. I will be fitting Exact belts as I've used them before. If it's going to be £200ish then they'll only be replaced if they're on their way out. If I'm understanding the parts diagram correctly, are there two bearings for each roller?

29-12-2021, 11:52 AM	#10
350TSS Too much time on my hands member Join Date: Jan 2013 Location: Shipbourne Bike: M900 Posts: 1,419	Simply Bearings is my go to supplier of bearings, seals and general engineering parts, easy to use web site with advice content and delivery in a couple of days. https://simplybearings.co.uk/shop/p6...duct_info.html

29-12-2021, 05:44 PM	#11
iainw Registered User Join Date: Sep 2014 Location: Preston Bike: S4r Posts: 61	Thanks Dukedesmo and 350TSS, that's what I'll do if they're needed.