Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 998 / 996 / 916 / 748 > Timing belts on the ST4S every 2 yrs or ooo miles ?

[Big Seven]

I notice you said materials have improved for the newer models, is that not the same for my model ? Is it the materials that changed or the engine design ?

[antonye]

Belt materials have improved and will have been incorporated into all belts, so yes yours will be better (stronger, last longer, better construction, etc) than they would have been 20 years ago.

The design of the newer engines hasn't changed that much, but it will have been engineered (design and materials) for an extended life on the belts.

[Big Seven]

Ive been checking on eBay and there is a huge difference in prices , I’ve seen Dayco for as little as 25 quid and others for as much as 130 , is there really that much difference in quality? What experiences have people had of different belt specifically any problems with Dayco , or others ?

[Big Seven]

Ive just realised some have the bearings too , I don’t believe the bearings will need replacing but should I do it anyway . Bearing (no pun ) in mind its only been 1000 to 1500 since last belt change ? All advice appreciated ...

[antonye]

There's a thread here about Dayco vs Gates (Ducati OEM) belts...
https://www.ducatisportingclub.com/s...ad.php?t=83685

[Big Seven]

Another question if you please about the ST4 S , re the tensioner bearings , does anyone know the part no , are all 4 bearings the same or have different parts no’s ? Or where can I find out the no’s ??

[Serious Black]

Later bikes have larger diameter pullies to help with belt life, 749/999 on I beleive.