The MySpeedParts garage
Guides, builds and race-day know-how.
Buying guides, maintenance tips, and racing know-how from the MySpeedParts team.
comparison
throttle body
Throttle Body (Fuel Injection) vs Carburetor: How Each Works, and Which Is Actually Better
FI vs carb isn't just old vs new — the two systems measure and deliver fuel completely differently. Here's exactly how each works, and where each one genuinely has the edge.
6 Sept 2026 · 4 min read
engine
Engine Cylinder Count Explained: Single, Twin, Triple, Four — Is More Always Better?
Single-cylinder Y15ZR, parallel-twin R25, four-cylinder CBR250RR... does cylinder count actually mean a better bike? Here's what changes with more cylinders, and why more isn't automatically best.
5 Sept 2026 · 5 min read
exhaust
Back Pressure vs Through-Flow (Straight-Through) Exhaust: Which Is Actually Best?
"No back pressure = more power" is only half true. Here's how back pressure and scavenging actually work in a small-capacity engine, and when a chambered exhaust beats a straight-through pipe.
5 Sept 2026 · 5 min read