Skip to content

FREE US SHIPPING ON ORDERS OVER $99

FREE UK SHIPPING ON ORDERS OVER £85

MOTO
CYCLE
ROAD

MOTO
CYCLE
ROAD

moto-support@renthal.com

Facebook
YouTube
Instagram

Country/Region

United Kingdom (GBP £)

Handlebars
Grips
Sprockets
Chain
Other

36mm Handlebars
1-1/8” (Oversized) Handlebars
- Twinwall
- Fatbar
7/8" Handlebars
Show All Handlebars

MX/Enduro Grips
- Lock-On
Trials Grips
ATV Grips
Grip Accessories
Show All Grips

Front Sprockets
Ultralight Alloy Rear Sprockets
Twinring®-Steel Rear Sprockets
Show All Sprockets

MX Chain
Off-Road Sealed Chain
ATV Sealed Chain
Chain Spares
Show All Chain

Handguards
Bar Mounts
Brake Pads
Bar Pads
Clothing
Show All Accessories

Handlebars
Stems
Pedals
Grips
Other

Carbon MTB Handlebars
- Fatbar Carbon
- Fatbar Lite Carbon
Alloy MTB Handlebars
- Fatbar
- Fatbar Lite
BMX Handlebars
Show All Handlebars

MTB Stems
- Apex
- Duo
Direct Mount MTB Stems
- Integra
Stem Spares
Show All Stems

Clip MTB Pedals
- Revo-DHC
- Revo-TRC
Flat MTB Pedals
- Revo-F
Pedal Spares
Show All Pedals

Lock-On Grips
Push-On Grips
Grip Accessories
Show All Grips

Chainrings
Accessories
Clothing
eBike

Handlebars
Grips
Sprockets
Chain
Accessories
Other

Clip-On Handlebars
1-1/8" Street Handlebars
7/8" Street Handlebars
1" (V-Twin) Handlebars
Show All Handlebars

Dual Compound
Single Compound
Grip Accessories
Show All Grips

Front Sprockets
Ultralight Rear Alloy Sprockets
Rear Sprocket Carrier
Show All Sprockets

Road/Street Chain
Race/Track Performance Chain
Chain Spares
Show All Chain

Bar Mounts
Bar Ends
Bar Brace

Brake Pads
Clothing

Renthal Official

Search

Search

Home
420 Moto Rear Sprockets
189U-420 Ultralight Rear Sprocket

1 / of 4

189U-420 Ultralight Rear Sprocket

£38.21

( / )

Tax included Shipping calculated at checkout.

Colour

Silver Red Black

Teeth

48T 47T 49T 50T 51T 52T 53T 54T 55T 56T 57T

Qty

SKU: 189U-420-47GRSI

Frequently Asked Questions

Your cart

Your cart is empty

Subtotal: £0.00 GBP

Loading...

RENTHAL

About Us
History
Contact Us
Careers

TECHNICAL

Moto Technical
Cycle Technical
Road/Street Technical

INFO

Warranty
Delivery Information
Returns Policy
Privacy Policy
Terms of Service
Cookie Policy
MAP Policy

Newsletter

Sign up for exclusive offers, original stories, events and more.

Email

© 2026 Renthal Official.

Choose options

Item added to your cart. View cart

Bar Dimensions

Width / Dim A

Height / Dim B (m)

Rise / Dim C

Clamping Width / Dim D

Sweep / Dim E

Control Length / Dim F

Mounting Diameter (mm)

Specifications

Bike Type

Chain Pitch

Maximum Machine Performance

MX 2 Stroke Limit

MX 4 Stroke Limit

Trials Limit

Connecting Link Style Inc

ECE R 90 Compliant

Fork Diameter

Offset

Width

Backsweep

Upsweep

Rise

Stack Height

Mounting

Clamping Diameter

Brace Length

Clamp Width

Steerer Clamp

Max Circumference

Min Circumference

Length

Grip Section

Outer Diameter

BCD

Tooth Options

Chain Compatibility

Weight

Volume

Tube Length