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Buying guides, maintenance tips, and racing know-how from the MySpeedParts team.
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exhaustback pressure
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.
MySpeedParts Team·5 Sept 2026
HPSP Racingbrand spotlight
HPSP Racing: Introduction, Reputation & What's Hot Right Now
A look at HPSP Racing — the Malaysian underbone performance-parts brand behind those chambered exhausts and racing crankshafts all over Y15ZR and LC135 TikTok — plus where to buy genuine stock.
MySpeedParts Team·4 Sept 2026