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Home > Products > Rear Sprocket > RFE > SUPERSPROX STEEL REAR SPROCKET RFE-1512:45-BLK


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Product Extra Information

Material Steel
Chain 520
Teeth 45
Color Black
Inner diameter (ID) 136
Pitch circle diameter (PCD) 156
Bolt hole 8.5
Type RFE
Product Application
ModelFrom yearTo Year
125 2T SUPERMOTARD20022005
125 CR20102013
125 EC19971998
125 EC 2T20012006
125 MX20072007
125 SM S Supermoto Street20012012
125 TT19941995
125 WR Enduro19901994
125 WR Enduro19951997
125 WR Enduro19982013
150 WR Enduro20112011
200 EC19992002
200 EC20032010
240 WR Enduro19901991
250 2T SUPERMOTARD20022006
250 CR Motocross19901999
250 CR Motocross20002005
250 EC20002000
250 EC, Six Days, Racing20012013
250 TC Motocross20062008
250 TC Motocross20092013
250 TCi Motocross20092013
250 TE20022003
250 TE20042010
250 TE20112013
250 TT19941995
250 TXC20112012
250 TXC GNCC20082016
250 TXCi20112013
250 WR20102012
250cc RR20052024
300 EC, Six Days, Nambotin Replica, Racing20012012
300 WR20092010
300 WR20112013
310 TE20092010
310 TE20112012
350 RR 4T20112012
350 TE Enduro19901995
360 CR19921994
360 WR Enduro19922002
400 4T SUPERMOTARD20022002
400 EC FSE20022003
400 M4 Motard (Street version)20072009
400 RR20052009
400 RR20102012
400 TE 400 SMR 410 TE19952002
449 TC20112013
449 TC Motocross20112013
449 TE20112013
449 TXC20082011
450 FSE, FSR20042010
450 RR20052009
450 RR20102012
450 SM R Supermot Street20042010
450 SM RR Supermoto Racing20042010
450 Supermotard SM20042006
450 TC Motocross20022010
450 TE20042010
500 FSE20062006
510 SM R Supermoto Street20062010
510 TC Motocross19901990
510 TC Motocross20042007
510 TC Motocross20082009
510 TE19902010
511 TE, TXC20112012
520 RR20102012
525 RR20052011
530 SM RR Supermoto Racing20102010
570 TC Motocross20012002
570 TE, 570 SM R20012005
610 SM R Supermoto Street20002008
610 TC Motocross19912001
610 TE19912002
610 TE20042009
630 SM20112011
630 SM R Supermoto Street20042010
630 TE20112011
CR 125 Motocross19901994
CR 125 Motocross19952009
DR 250 SE (Street legal model)19931995
DR 650 SE T,V,W,X,Y,K1-K9,L0,L1,L2,L3 (520 conv.)19962014
DR250 S-L, M, N, P19901993
DR250 SE-P, R OFF ROAD19931994
DR250 SE-P, R, S OFF ROAD19931995
DR350 S-L, M, N, P SK42B19901993
DR350 SE-R, S19941995
DR650 SE-M0 (520 conv.)20192024
DR650 SE-T,V,W,X,Y,K1-K9,L0-L8 (520 conv.)19962018
EC 515 FSR20092010
SE 2.5 2T20132014
SE 2.5 R 2T20132016
SE 2.5I F Enduro20092012
SE 2.5I F Enduro20132014
SE 3.0 2T20132014
SE 3.0 R 2T20132021
SE 3.0I F Enduro20102012
SE 3.0I F Enduro20132017
SE 4.5I F Enduro20092012
SE 4.5I R 2T20132014
SE 5.1I F Enduro20092012
SEF-R 300 4T20132021
SX 2.5I F Cross20092012
XF 650 FREEWIND V,W,X,Y,K1,K2 (520 conv.)19972002

Select option below to choose diffent teeth and color

Each order from 220PLN value of goods, indlude free shipping inside Poland. If order total is less then 220PLN, shipping cost will be calculated.


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In Stock

Excl. 23% VAT and Shipping


Product Description Image

Available in colors


Check your bike model for availabe color. More color options in Custom sprocket Section

Category Description

Why Supersprox Racing Steel

  • CAD Designed and CNC Laser cut to ensure an exact fit.
  • One of the lightest all steel sprockets on the market.
  • The steel theet last 3 times longer than aluminum.
  • Developed on the race track to give longer system life and high performance.
  • Include our exlusive 2x zink for anti corrotion and black finish.
  • Special tooth design increases chain contact and significantly extends the sprocket life.


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FAQ: Frequently asked questions

Products FAQs

Return policy

Unused items in saleable condition purchased from our eShop may be returned within 30 days of the purchase date for a credit to the card on which they were originally purchased. Returned goods will only be accepted with prior authorization. For more detailed return policy click here.

I received a damaged product

If the sprocket you purchased is damaged please make images and send to us by email and one of our representative will connect with you within 48h.


Exchange of the sprocket is possible only if the sprocket is not used and purchased from our eshop directly. Return sprocket will be fully refunded (excluding shipping) and a new order for the exchange sprocket has to be placed on our eshop.


All sprockets are guaranteed against defects in material and workmanship. Because we cannot control the application of our sprockets, buyers assume risks for any and all damage caused to themselves and others due to any failures. No warranty, expressed or implied, is made. Sprockets are designed and manufactured to be used specifically on the models listed in our catalog. Clearances must be checked before ordering different size sprockets than originally came on the machine. Chains are guaranteed in accordance with the manufacturer’s own terms of warranty. All products leave our warehouses in good condition, therefore if you receive an item that is not in good condition it should be immediately reported.

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    Shipping methods

    Each order from 220PLN value of goods, indlude free shipping inside Poland. If order total is less then 220PLN, shipping cost will be calculated.

    Gear Ratio


    Gear ratio explained. The gear ratio, is the ratio of turns made by one gear, compared to the other gear, when the gears are connected by a chain. An example of gear ratio will be with one gear of 10 teeth and the second gear of 20 teeth, giving a ratio of 2 (20/10=2). To calculate the ratio, devide the number of teeth on the rear sprocket, by the number of teeth on the front sprocket and the resulting number is your gear ratio.
    Why do you need to know your gear ratio? It might be, that your bike is not performing as you would like and a change in gear ratio might help the performace.
    GEAR DOWN. An example of this would be, that the bike is difficult to start in first gear and the clutch needs to be used more than you would like. You have plenty of top end speed, but need more slow speed control. The answer, might be to GEAR DOWN the bike. You can do this by adding more teeth to the rear sprocket or reducing the number of teeth on the front sprocket.
    GEAR UP. The opposite situation, might be that the bike has lots of power, but is reaching the rev limiter in top gear and you would like to reduce the revolutions at a particular speed. To do this, you would need to GEAR UP the bike. By reducing the number of teeth on the rear sprocket or increase the number of teeth on the front sprocket.
    Diameter of gear. Each tooth added or taken away from a sprocket, will reduce the diameter of the sprocket by a given amount. For simplicity, you can think about 5mm change on the diameter, for each additional or reduced tooth. This will help understanding in relation to space requirements for gear ratio changes.
    Chain length. The addition of teeth to the sprocket, may require a longer chain or changing the position of the rear wheel, by moving that backwards or forwards. It will depend on the addition or subtraction of sprocket teeth. This can be calculated by considering the chain pitch. For simplicity, you can think about each chain link requiring 16mm length (actually 520, 525, 530 chains require 15.875mm per link to be exact). But the chain is going around the rear sprocket and the front sprocket, so the important number would be the change in diameter of the sprocket and not the chain length. An example would be to remove one tooth from the rear sprocket. This would make the chain more loose and to correctly adjust the chain, you would need to move the rear wheel backwards (away from the small sprocket) by 5mm. This movement would compensate for the change in diameter. Due to chain construction, it is not possible to remove only one link and it is neccasary to remove even numbers of links (2, 4, 6, 8 etc).

    Product Video

    Custom Product Teeth