Precision Two-Stroke Parts & Conversions
Engineered components, conversion kits, and fabrication for modernized two-stroke builds
Parts & Conversions by Bike
Purpose-built components for CR500, KX500, and custom two-stroke platforms
Conversion Components & Engine Parts
Newly released and updated components designed for modern two-stroke conversions and performance builds.
TESTED BY KAPLAN CYCLES
ENDORSED BY IVAN RAMIREZ
FEATURED IN MOTOCROSS ACTION MAGAZINE
2021-2025 CR500 ENGINE KIT
Complete bolt-on conversion for modern chassis builds.
• No cutting or drilling required
• OEM-level fitment
Aluminum Frame Conversion Services
Custom two-stroke conversions engineered from the ground up.
• Chassis integration
• Engine fitment & fabrication
Masters of Our Craft
Every TSO product and service is developed using modern engineering tools, real-world testing, and hands-on build experience.
"It's a bolt-in solution, no cutting of the frame, no modifying... the only one of its kind in the world today."
Ken Kaplan
Kaplan Cycles on the 2024 KX500
"This bike is truly a dream come true and absolutely rips the hill climbs. Will be a customer for many years to come."
Ivan Ramirez
On his steel frame KX500 build
"I'm truly amazed by the quality and design detail that went into these covers. So much so that I purchased the rest of their CR500 parts once they arrived!"
Keith Mahoney
From his CR500 clutch cover purchase
San Diego, California
4747 Oceanside Blvd.
Oceanside, CA 92056
(707)-813-1560
luke@twostrokesonly.com
Monday - Friday, 7:00 to 4:00
Saturday-Sunday, Closed
