YOSHIMURA CAMSHAFT ST-L2 fits GSX1100S KATANA

Performance engineering for the legendary air-cooled Katana.

The Yoshimura ST-L2 Camshaft is a lightweight high-performance camshaft developed specifically for the GSX1100S Katana, combining increased engine response, reduced rotating mass, and improved durability for serious air-cooled Suzuki builds.

Designed around Yoshimura’s philosophy of “more power with less weight.”

🔧 PRODUCT DETAILS
Brand: Yoshimura
Type: ST-L2 Camshaft

Specifications:
✔️ Max Lift: IN 9.50mm / EX 9.50mm
✔️ 1mm Duration: IN 257° / EX 257°
✔️ Standard Tappet Clearance:
• IN 0.15–0.18mm
• EX 0.15–0.20mm

Required Parts:
✔️ Valve Spring Kit

✔️ Advanced large-diameter hollow cam construction
✔️ Approx. 20% weight reduction (around 600g per pair)
✔️ Reduced gyroscopic effect
✔️ Improved throttle response
✔️ Barrel polished surface treatment
✔️ Reduced friction loss
✔️ Enhanced durability and wear resistance

🔥 WHY UPGRADE?

Yoshimura engineered the ST-L2 camshaft to improve engine response while reducing rotating mass inside the valvetrain.

Benefits include:
✔️ Faster throttle response
✔️ Improved high-RPM performance
✔️ Reduced engine rotational resistance
✔️ Increased durability under hard use
✔️ Ideal for tuned air-cooled Suzuki engines

The lightweight hollow construction significantly reduces camshaft weight without sacrificing strength.

🏍️ FITMENT

SUZUKI GSX1100S Katana

⚠️ Not compatible with GS110X models

Valve guide modification required.

(Always confirm compatibility before purchase)

⚠️ IMPORTANT NOTES
Valve spring kit required for installation
Valve guide modification required
Image shown may display ST-L1 version
Camshaft specifications are based on design values and may vary slightly between production batches
Instruction manual, if included, will be in Japanese

⚔️ FINAL WORD

LIGHTWEIGHT • RESPONSE • PERFORMANCE

Classic Yoshimura engineering for one of Suzuki’s most iconic machines.