Join Date: Apr 2001
Location: Portland, OR USA 97204
520 conversion for 996
I did the conversion a couple days ago, and I'm really happy so far. I weighed the new stuff vs. the old stuff so I could see how much weight I saved.
The stock setup is DID 525 chain, 15/36 gearing. I went with the AFAM lightweight 15 tooth front (has holes to save weight), DID ERV2 gold x-ring 520 chain and AFAM quick change rear setup with 40 tooth sprocket.
The acceleration is much more brisk, with about 600rpm difference at highway speeds. It gets to 110 much much quicker, but I haven't ridden anything but highway miles, so no real riding impressions yet.
Stock DID 525 chain: 1.81kg / 3# 15.75oz
New DID 520 ERV2 gold chain: 1.52kg / 3# 5.75oz
Result: 520 chain is 29g / 10oz lighter
Stock 15 tooth 525 front sprocket: 260g / 9.25oz
New AFAM lightwt 15 tooth 520 front sprocket: 215g / 7.5oz
Result: new sprocket is 45g / 1.75oz lighter
Stock 36 tooth 525 rear sprocket: 975g / 2# 2.5oz
New AFAM quick change 520 rear, 40 tooth: 650g / 1# 6.75oz
Result: new rear setup is 325g / 11.75oz lighter
Stock weight: 3.045kg /6# 11.5oz
New weight: 2.385kg / 5# 4oz
weight savings: 660g / 1# 7.5oz