This kit includes the front and rear sprockets fitted to the bike as factory standard, with the correct length chain included.

SPKF052 Description Lextek Front Sprocket 428-15T 156FMI 157FMI

The front sprocket, also known as the countershaft sprocket, is a key component in a motorcycle's drivetrain. Located at the output shaft of the engine or transmission, it engages with the motorcycle's chain to transmit power from the engine to the rear wheel. The front sprocket works in conjunction with the rear sprocket and chain to control the motorcycle’s gearing, affecting acceleration, top speed, and overall performance. Its size and number of teeth influence the bike’s torque and speed characteristics.

Specifications

Mounting Hole PCD: 34mm
Bolt Hole Diameter: 5.5mm
Spline Diameter: 20mm
Spline Quantity: 6
Spline Width: 5.5mm
Type: Sprocket

SPKR079 Description Lextek Rear Sprocket 428-38T 4 Bolt Fixing for KS125-23, DFE125-8A, KS125-24, SJ125-26, SJ125-27,

The rear sprocket on a motorcycle is a key component of the drivetrain system, located on the rear wheel hub. It works in conjunction with the front sprocket and the chain to transmit power from the engine to the rear wheel, propelling the motorcycle forward. The rear sprocket features a series of teeth that mesh with the chain, and its size affects the motorcycle’s gearing and performance characteristics. A larger rear sprocket increases torque and acceleration, while a smaller one improves top speed and fuel efficiency. Proper maintenance and alignment of the rear sprocket are essential for optimal drivetrain performance and safety.

Specifications

Mounting Hole PCD: 80mm
Bolt Hole Diameter: 8mm
Inner Diameter: 64mm
Bolt Hole Quantity: 4
Teeth: 38
Pitch: 428
Type: Sprocket

CHN071 Description Lextek Motorcycle Drive Chain 428-122 Links Gold

Chain drives are flexible and made of number of links and its a intermediate between belts and gears drives. Chains can only be used to transmit power between parallel shafts.

IMPORTANT INFORMATION

This is not an O-Ring or X-Ring chain and as such we don't recommend it be fitted to motorcycles with an engine capacity larger than 500cc and a power output greater than 30bhp.

Packaging may vary from images shown.

Specifications

Motorcycle Drive Chain Pitch: 428
Quantity of Links: 122
Brand: Lextek
Classic Part: No
Colour: Gold
Country/Region of Manufacture: China
Items included: Chain
Machine Type: Street Motorcycle
Manufacturer Part Number: CHN071
Manufacturer Warranty: 12 Months
Material: Steel
Performance Part: No
Pitch Size: 428
Reference OE/OEM Number: 110100053
Type: Drive Chain
Unit Quantity: 1
Unit Type: Unit
Universal Fitment: No