Aprilia RS125 Pneumatic Power Valve Install – Simpler, Lighter, Better?

Ditching the SOLENOID. The pneumatic power valve system on the RS125 is simpler, lighter — but does it actually deliver? Full install, first start, and a real road test. On a Rotax 122, the stock power valve servo is one more thing to fail. In this video I fit a pneumatic replacement — covering the full kit, the metal spacer you absolutely cannot skip, exhaust port gasket alignment, and a cold-start on the finished bike. No shortcuts. No guessing. If you're building or restoring an RS125, this is the install sequence I wish I'd had. What's covered: Pneumatic power valve kit components walkthrough Metal spacer fitment — why it matters Exhaust port and gasket alignment First start on the pneumatic system Road test — how it actually rides Coming soon! : Full EFI conversion. Future build: servo-controlled valve. 📌 Chapters 00:00 Intro — Why Go Pneumatic? 00:22 Kit Components Walk-through 01:20 Metal Spacer — Don't Skip This 01:45 Exhaust Port & Gasket Alignment 02:16 EFI — What's Coming Next 03:43 Like & Subscribe 04:37 The One Trade-Off — Self-Cleaning Loss 05:12 First Start — Pneumatic System Live 06:53 Road Test ☕ Want to help fund the workshop? Buy Me a Coffee: https://buymeacoffee.com/riditfixitmakit coffee goes towards parts, tooling, and keeping the projects rolling. No pressure, but massively appreciated if you do. Cheers.