Pistons, rings, valves, and timing — two-stroke and four-stroke — rebuilt on the hour meter's schedule instead of the crankcase's. The interval work that keeps race engines being engines.
The position every dirt bike owner eventually learns — cheaply or expensively: modern four-strokes don't fade gradually, they fail suddenly. A 450 feels strong right up until the hour the piston skirt lets go, and what would have been a scheduled top-end becomes a crank, a cylinder, and cases getting split. The hour meter isn't a suggestion; it's the whole game.
Our rebuilds start with measurement, not assumption: compression and leak-down tell us the engine's real state, and honest platform knowledge fills in the rest — KTM and Husqvarna intervals differ from the Japanese bikes, race hours count double, and Gulf Coast sand that got past a lazy air filter rewrites everyone's schedule. Then the work: quality piston kits, valves and timing done right on the four-strokes, power valve service on the two-strokes, and torque specs treated as scripture.
What you get back is documented — measurements before and after, parts installed, and the next interval written down. Engines with paper trails are engines that never surprise you.
The Houston factor deserves its own paragraph: our tracks and trails run sand, and sand that gets past a poorly-oiled filter is a lapping compound your engine runs on all day. Half the premature top-ends we see trace back to air filter habits — which is why filter and airboot condition are part of every rebuild conversation, and why hour-based maintenance between rebuilds is the actual secret to cheap ownership.
Racing? Pair the fresh engine with race prep and the bike shows up at the gate proven — engine, suspension, and the nut-and-bolt pass in one visit.
Harder starting, down on power, more vibration, oil consumption on four-strokes, and rattle or pinging under load. But honest answer: by the time symptoms show, you're past due. Compression and leak-down numbers catch it earlier — we test before we recommend anything.
Per rebuild, substantially — fewer parts, simpler job. They want them more often, but the math still favors the two-stroke for owners who ride a lot and maintain religiously. It's part of why the 250 two-stroke refuses to die as a class.
Check them, always — the head's already accessible and clearances tell the story. Replace them when the shim history shows steady tightening (receding seats) or the measurements say so. Doing valves during a piston job saves the labor of opening the engine twice; we'll show you the numbers and let them decide.
With parts in hand, two to four shop days including measurement, assembly, and first heat cycles. Valve work or cylinder replating adds time we quote up front. Book it in the off-weeks and the bike never misses a race weekend it was signed up for.
Sometimes genuinely yes — a proven big-bore on a trail bike adds torque everywhere with little downside when the supporting jetting/mapping is done. On race bikes, class rules and reliability math matter more. Rebuild time is the right moment to decide, and we'll give you the honest platform-specific answer.
Tell us the bike and the hours. We'll measure it, give you the honest interval answer, and hand back an engine with a paper trail.
(713) 555-0182