Stihl 3/8" Picco 7 Tooth Spur Sprocket Kit - 020T, MS200T

Restore legendary cutting throttle and peak chain velocity to your professional climbing saw with the genuine OEM STIHL 3/8" Picco 7-Tooth Spur Sprocket Kit. Precision-engineered to match the heavy-duty, high-RPM output of the classic 1129-series engine platforms, this factory replacement drum fits the world-standard 020T, MS 200T, and MS 200. Replacing a grooved or heavily hooked drive spur restores crisp, immediate power transfer, minimizes internal clutch slippage, and protects your premium cutting loops from erratic binding.

This original equipment manufacturer assembly features a precision-machined 7-tooth spur gear integrated directly onto a structurally reinforced steel drum shell. The 7-tooth configuration optimizes linear chain speed across the guide bar, allowing arborist crews to clear canopy lines and slice through hardwood limbs rapidly at top operating RPMs. Case-hardened to meet demanding professional standards, the spur tracks guide the chain drive links smoothly into alignment, eliminating high-speed chatter and reducing premature chain stretch.

True OEM Integrity vs. Soft Aftermarket Metal: High-production arborist saws run at severe operational RPMs that quickly distort un-hardened aftermarket alloys. Imprecise non-OEM parts introduce loose tolerances on the crankshaft, causing harmonic vibrations that rapidly ruin the internal needle cage bearing, deform the oil pump drive gear, and cause premature centrifugal clutch shoe fatigue. A genuine STIHL drive drum guarantees absolute concentricity and metallurgy to safeguard your professional powerhead.

Configuration & Application Note: Designed explicitly for STIHL 1129-series professional models configured with a 3/8" Low Profile (Picco) pitch chain loop (.043" or .050" gauge). This setup will not accept standard .325" or full-profile .375" professional chain. The package consists of the genuine integrated 7T spur sprocket drum body ready for direct drop-in installation.

Key Features & Benefits

• High-Velocity 7-Tooth Design: Maximizes linear cutting speed across the bar rail, streamlining high-production tree care and commercial climbing.
• Unified Structural Spur Design: Integrated steel construction provides exceptional concentricity, preventing power loss and balancing high-speed clutch dynamics.
• 100% Genuine OEM STIHL Manufacture: Crafted from proprietary heat-treated high-carbon steel to ensure long-lasting durability against severe commercial wear.
• Smooth Drive Link Tracking: Hardened guide pathways cradle the chain chassis evenly, minimizing friction, heat build-up, and localized guide bar rail wear.
• Exact Crankshaft Interface: Inner hub bore dimensions match 1129-series factory specifications perfectly to deliver a balanced, vibration-free rotation.
• Pro-Grade Reliability: Eliminates unexpected equipment failure and costly crew downtime on critical high-stakes tree-climbing projects.

Technical Specifications & System Components