JT 45T Steel Rear Sprocket JTR269.45 — C49 High-Carbon, Heat-Treated for Durable Chain Engagement

JT Sprockets JTR269.45 is a 45-tooth heat-treated steel rear sprocket crafted from C49 high carbon steel for reliable power transfer and long service life.

Built for motorcycles and powersports machines that demand consistent chain engagement and rugged longevity, this JT rear sprocket combines precision machining, thermal hardening, and hand finishing to meet strict industry standards. The JTR269.45 is engineered to replace worn sprockets or to provide an upgrade that balances durability with predictable performance across street, trail, and track conditions.

How does the JTR269.45 improve drivetrain durability?

The sprocket uses C49 high carbon steel and a controlled heat treatment to increase wear resistance while preserving abrasion strength. Accurate CNC machining and careful hand finishing reduce rough spots and stress risers that accelerate wear on chains and teeth.

• C49 high carbon steel construction for enhanced tensile strength
• Heat-treated teeth for improved fatigue resistance
• Hand finishing to remove machining burrs and ensure smooth chain engagement
• 10 quality-control inspections before shipping to maintain consistency

Will this sprocket fit my bike and how does tooth count affect performance?

The model JTR269.45 is a 45-tooth rear sprocket; compatibility depends on bolt pattern and offset for your specific make and model. Increasing rear tooth count typically yields lower gearing for better acceleration and easier hill-climbing, while fewer teeth favor higher top speed.

• 45T rear sprocket for lower gearing compared with smaller-tooth options
• Check bolt pattern and hub offset against OEM specifications
• Common upgrade choice to boost low-end response and traction

What manufacturing controls ensure consistent quality?

JT Sprockets applies precise machining tolerances and subjects each sprocket to a sequence of inspections to ensure exact tooth profiles and concentricity. A multi-step process—including heat treatment and a final manual check—helps minimize warping and rejects, so each unit leaving the factory meets tight drivetrain standards.

• CNC or precision machining for accurate tooth geometry
• Controlled heat-treatment cycle to stabilize hardness across the sprocket
• Ten separate quality-control checks to verify dimensions and finish
• Final hand finish to guarantee smooth contact surfaces

Who is this for? The JT JTR269.45 suits riders and mechanics who prioritize a durable, precisely made steel rear sprocket for everyday use, spirited riding, or off-road conditions. It's a straightforward choice for anyone replacing a worn rear sprocket or adjusting final drive gearing for improved acceleration. If you need a reliable 45-tooth steel sprocket made from C49 high carbon steel with robust manufacturing oversight, this JT unit is built to meet those requirements.