When I was in Cambo last month (Feb-07, I visited a new and excellent bike shop that just opened in Phnom Penh,. called Adventure Moto. The shop is located 16E St. 136, just a block away from Sisowath Quay and the river. Mobile: 012-189-6728 The owners, Brady and Jeff, are both avid bikers and excellent mechanics. They previously worked for a US airline as aircraft & engine mechanics. Their shop is laden with more 'Snap-On" tools than many race car crews have. They also have a TIG welder and the only plasma welder I've seen in PPenh. They have rentals...the bikes either new or low mileage and in superb condition. XR & Baja 250's, CRM 250, XR 650's (the only rental 650's in town) and some small motos. Rental prices are similar to those at "The Bike Shop" and unlike the cheaper bikes from "Lucky-Lucky" the bikes will be reliable. Helmets are provided with rentals. They also conduct off-road and road tours throughout Cambodia.