Cookies allow us to measure our audience, ensure that our advertising services work properly, maintain our relationship with you and provide you the best possible experience. Click on "Learn more" for more information.

BLACK WEEK J'EN PROFITEoffer

Pay 4x free of charge + more info

Win a HORNET 750 or a CB125R Go for it!

Item 1 of 3

30 days returns

Help and contacts

Motorbike

Basket

Black Friday
Motorbike helmets
Full-face helmets
Modular helmets
Jet helmets
Motorcross helmets
Kids helmets
Men's Motorcycle Gear
Motorbike Jackets Leather Motorbike Jackets Textile Motorbike Jackets Summer jackets Airbags Back protectors and other protective gear
Motorbike gloves Summer Motorbike Gloves Mid-season motorbike gloves Winter Motorbike Gloves Heated Motorbike Gloves Gore-Tex gloves
Motorbike pants Jeans Textile pants Leather Pants Waterproof pants Protectors/Sliders/Knee pads
Men's Motorcycle Boots and Shoes Motorbike Boots and Anckle Boots Motorcycle Sneakers and Shoes Waterproof boots, sneakers and shoes
Cold and Rain All heated products Neckwarmers/Balaclavas/Masks Technical and thermal underwear Inner-gloves/Over-gloves/Over-boots Rain Suit Rain jackets/pants
Race suits
Essentials at reduced prices
Men's Equipment Packs
Women's motorbike gear
Women's Motorbike Jackets Leather jackets and vests Textile jackets and vests Waterproof jackets and vests Back protector and other protective gear Airbags
Women's Motorbike Gloves Summer Motorbike Gloves Mid-season Motorbike Gloves Winter Motorbike Gloves Heated Motorcbike Gloves Waterproof Motorbike Gloves
Women's Motorbike pants Women's Motorbike Jeans Textile pants Leather Pants Waterproof pants Protectors/Sliders/Knee pads
Women's Motorbike Boots and Shoes Sneakers and Shoes Boots and ankle-boots Waterproof boots and sneakers
Cold and rain Rain jackets and pants Neck warmers/balaclavas Inner gloves/Over gloves/Over boots Rain Suits Technical and thermal underwear
Essentials at reduced prices
Race suits
Mx, Enduro and Trials
Motocross Motocross Helmets Motocross outfits Motocross Jerseys Motocross pants Motocross gloves Motocross boots Spare parts Boots Spare Parts Helmets
Enduro Enduro helmets Enduro jackets Enduro jerseys Enduro pants Enduro gloves Enduro boots Spare Parts Boots Enduro luggage
Kids Kids motocross helmets Masks Screens and Accessories Kids motocross outfits Jerseys Pants Gloves Boots Protections Chest protectors and vests Knee and elbow pads
Mx/Enduro Masks Masks Screens and Accessories
Mx/Enduro Protectors Chest protector/Protection vest Neck Protection Orthotics/ Knee pads/Elbow pads Technical Protection
Technical accessories Technical underwear Rainwear Hydration systems/camel backs Socks and leg warmers
Trial Trial Helmets Trial Jerseys Trial Pants Trial Boots
Mx/Enduro Prov equipment
Motorbike Tech
Intercoms and hands-free kits Communication Systems Intercom Accessories and Spare Parts
Smartphone accessories Phone cases Phone holders Adapters and Chargers
GPS and GPS trackers GPS and Tracker GPS holders
Motorbike Airbags
Airbags
Airbag Accessories and Refills
Motorbike luggages
Top cases and motorbike suitcases
Saddlebagsand pillion bags
Tank Bags
Mounting brackets & installation kits
Tank pads for luggage
Back rests & sissy bars
Backpacks and leg bags
Transport bags
Luggage Packs
Motorbike parts and tools
Oil & maintenance spray Engine oils Liquids & lubricants Maintenance sprays & liquids
Motorbike filters Oil filters Air filters Air horns Filter accessories
Motorbike exhausts Motorbike mufflers & silencers Motorbike manifolds Complete exhaust systems Motorbike exhaust accessories
Motorbike braking Motorbike brake pads Motorcycle discs Lever, master cylinders & pedals Brake hoses Repair kits
Batteries & electrical parts Motorbike batteries and chargers Turn signal relays Starters Stator Neiman - Ignition switches Other electrical parts
Transmissions Motorbike chain kits Motorbike chains Motorcycle sprockets Motorbike sprockets Scooter transmissions
Engine parts & cables Motorbike spark plug Clutch Carburation and injection Seal Cable Reed valve Upper engine Lower engine Cooling system
Wheels & inner tubes Inner tubes, foam & accessories Wheels & rims Wheel bearings
Shock absorber & suspension Shock absorber Fork oil seals Bearings Friction ring Lowering kit Reconditioning kit Starter hook
Tools and maintenance Motorbike maintenance products Battery chargers Workshop stands Motorbike covers Tools
Motorbike accessories
Locks & alarms
Motorbike customization Commodo & horns Speedometers & Indicators Handlebars & accessories Fork tees & handlebar clamps Handles & heated handles Gas cylinders Levers, clutch covers, master cylinders Footrests, selectors & pedals Rearview mirrors Motorbike kickstands Stickers & rim nets License plate holders Decoration kits Tanks & caps Insurance holders
Motorbike clothing & protective gear Winshields, windscreens & windjumps Plastic kits Radiator scoops and protectors Seat covers Bodywork & Fairings Mudguards Wheel arches Tank protectors Protectors & covers Motorbike shoes Crash bars & sliders Aprons & handle bar muffs
Lighting and signage Bulbs Turn signals and lights Indicator centrals/relay & resistors
Motorbike seats Comfort seat (or stock type)Universal seats Saddle covers
Tech GPS GPS accessories
Sportswear
Caps/beanies/neck warmers
T-shirts/Shirts/Polo shirts/Sweatshirts
Jackets and down jackets
Transport bags and backpacks
Gift ideas
MotoGp Replicas
Motocross Sportswear
Deals and Promotions
Helmets and Accessories
Men's Motorbike Equipment
Women's motorbike equipment
Motorcross/Enduro/Trials
Motorcycle parts and accessories
Gift cards
Brands
Contact us

BLACK WEEK J'EN PROFITEoffer

Pay 4x free of charge + more info

Win a HORNET 750 or a CB125R Go for it!

Item 1 of 3

10€ free

Homepage

Motorbike parts and tools

Transmissions

Sprocket RFX Pro Series Elite Aluminium - 520

BLACK WEEK

RFX Pro Series Elite Aluminium - 520 Sprocket

Non-contractual photo

BLACK WEEK

RFX Pro Series Elite Aluminium - 520 SprocketRef : RFX00317A / 1123221011

Your Black Week price:

50,00 ^€

Earn 50 points with My Motoblouz

Check compatibility

Add to basket 50,00 €

Payment in instalments available!

Try first, pay in 15 days

30 days returns

Description
Compatible motorbikes
Questions and answers

DescriptionRFX Pro Series Elite Aluminium - 520 Sprocket

Product details :

Features

RFX Pro Series Elite Aluminum Sprocket - 520 (Manufacturer's reference: FXRS 20-52 99BK)

Specifically designed for motocross, this RFX Pro Series Elite sprocket is CNC machined from 7075 aluminum. Its design incorporates mud evacuation grooves to limit clogging and extend the lifespan of the chain and sprocket. The precision machining and CAD-designed profile aim to reduce weight while maintaining a rigidity suitable for off-road demands.

Material: CNC machined 7075 aluminum
Color: Anodized black (RFX color code depending on model)
Number of teeth: 52 teeth
Chain pitch: 520
Finish: Laser-engraved RFX logo, colored anodization
Design: CAD profile, mud evacuation grooves, tight tolerances

The sprocket is also available in standard silver finish and in several brand-coded colors to visually match the machine. Ideal for motocross riders looking for a lightweight and well-crafted component for their 520 setups.

KAWASAKI KX 450 X (2026)
KAWASAKI KX 250 X (2026)
KAWASAKI KX 250 (2026)

Technical information :

Reference

RFX00317A / 1123221011

No transmission chain

520

Number of teeth (crown)

Type of crown

Standard

Number of teeth

52 teeth

Material

Aluminum

Color

Black

Compatible motorbikes

KAWASAKI51 compatible models

KX 125 (KX125C) - 1984/1984KX 125 (KX125M) - 2003/2008KX 125 (KX125D) - 1985/1985KX 125 (KX125E) - 1986/1987KX 125 (KX125F) - 1988/1988KX 125 (KX125G) - 1989/1989KX 125 (KX125H) - 1990/1991KX 125 (KX125J) - 1992/1993KX 125 (KX125B) - 1982/1983KX 125 (KX125K) - 1994/1998KX 125 (KX125L) - 1999/2002KDX 200 (KDX200A) - 1983/1985KDX 200 (KDX200C) - 1986/1988KDX 200 (KDX200E) - 1989/1994KDX 200 (KDX200H) - 1995/2006KDX 220 R (KDX220R) - 1997/2005KX 250 - 2023/2026KX 250 (KX250B) - 1982/1982KX 250 (KX250C) - 1983/1984KX 250 (KX250D) - 1985/1986KX 250 (KX250F) - 1988/1988KX 250 (KX250G) - 1989/1989KX 250 (KX250H) - 1990/1991KX 250 (KX250J) - 1992/1993KX 250 (KX250K) - 1994/1998KX 250 (KX250L) - 1999/2002KX 250 (KX250E) - 1987/1987KX 250 (KX252B) - 2020/2021KX 250 (KX250M) - 2003/2004KX 250 F (KX250Z) - 2013/2016KX 250 (KX250R) - 2005/2008KDX 250 (KDX250D) - 1991/1994KX 250 F (KX250N) - 2004/2005KX 250 F (KX250T) - 2006/2008KX 250 F (KX250W) - 2009/2009KX 250 F (KX250X) - 2010/2010KX 250 F (KX250Y) - 2011/2012KX 250 (KX252A) - 2019/2019KX 250 F (KX252A) - 2017/2018KX 250 X - 2023/2023 - 2025/2026KX 250 (KX252C) - 2022/2022KX 450 F (KX450D) - 2006/2008KX 450 (KX450J) - 2019/2022KX 450 F (KX450E) - 2009/2011KX 450 F (KX450F) - 2012/2015KX 450 F (KX450H) - 2016/2018KX 450 X - 2023/2023 - 2025/2026KX 450 - 2023/2023 - 2025/2025KX 500 (KX500E) - 1989/2003KX 500 (KX500D) - 1988/1988KX 500 (KX500C) - 1987/1987

Questions and answers

Homepage

Motorbike parts and tools

Transmissions

Sprocket RFX Pro Series Elite Aluminium - 520

30 days returns

Payment 100% secure

Our frequently asked questions

Our experts are at your service

Monday to Friday from 9.00 am to 6.30 pm and Saturday from 9.00 am to 12.30 pm and from 1.30 pm to 5.00 pm

Our telephone service will be exceptionally closed on Wednesday, November 19, 2025 from 12customer-service.yellow-banner.top.hour00 PM to 1customer-service.yellow-banner.top.hour30 PM.

They're talking about us

Trustpilot

See all reviews