03.6220 Pro-X Connecting Rod Kit for KTM SX125 SX144 1998-2015

Connecting Rod Kit for KTM

This Pro-X connecting rod kit, part number 03.6220, provides a complete rod assembly for rebuilding the bottom end of KTM SX125 and SX144 two-stroke engines from 1998 through 2015.

Overview

This connecting rod kit is a direct replacement option for riders rebuilding the crank assembly on a KTM SX125 or SX144. The kit delivers a fresh rod, bearing, and pin so the bottom end can be reassembled with confidence. It suits home mechanics and race shops servicing 1998-2015 SX 125 and SX 144 machines.

Built For Performance

• Complete connecting rod assembly with bearing and pin
• Manufactured by Pro-X to match OEM rod dimensions
• Cross-references OEM part number 03.6220
• Engineered for high-rpm two-stroke operation
• Balanced rod weight for smooth crankshaft rotation
• Heat-treated steel construction for durability

Fits These Machines

• for KTM SX125 1998-2015
• for KTM SX144 1998-2015

On-The-Job Use

• Top-end and bottom-end engine rebuilds
• Motocross race bike refresh before the season
• Crank rebuilds after a piston seizure
• Preventive maintenance on high-hour engines

Specs At A Glance

Good To Know

Q: Does this kit include the rod bearing? A: Yes, the kit is supplied as a complete assembly with rod, bearing, and pin for a full bottom-end rebuild.

Q: Do I need to press the crank apart to install it? A: Yes, a connecting rod replacement requires splitting the crank assembly, so a press and proper tools are recommended.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.