Description

Yamaha TTR125, TTR125P, TTR125L, TTR125LP Parts Catalog

If you’re rebuilding a TTR125 top end and you’re guessing which piston ring pack fits the 2001 model, you’re wasting time and money. That’s where this OEM Yamaha parts catalog comes in. Aftermarket parts lists are full of holes—missing alternates, wrong supersessions, no model code breakdown. This 55-page factory document gives you the exact exploded views and part numbers for the Yamaha TTR125, TTR125P, TTR125L, TTR125LP Parts Catalog. I’ve seen guys order a crankshaft for a 5HPB motor when they needed the 5HPD version. That’s a weekend lost waiting for the right box. Don’t be that guy.

This catalog is a replica of the Yamaha dealer microfiche. It covers the engine, chassis, and electrical systems with every screw, gasket, and seal called out by OEM part number. You get the same data the parts counter uses.

Engine Section: Cylinder, Crankshaft, Valve, and Camshaft

Inside the Engine folder, you’ll find dedicated pages for Cylinder, Crankshaft.Piston, Valve, and Camshaft.Chain. Each assembly is drawn with an exploded diagram and a parts list. Need the valve stem seal for a TTR125L? Look under Valve—the part number is listed with quantity and color code if applicable. The camshaft chain tensioner is under Camshaft.Chain. Use the Numerical Index at the back to jump to any part number fast. This isn’t a service manual; there are no torque specs or assembly steps. But if you’re ordering parts, this is the only source that gets the numbers right.

Transmission and Clutch: Exploded Views for Ordering Gears

The Transmission section shows the main shaft, countershaft, and all gears. Clutch components—plates, springs, basket—are under Clutch in the Engine group. I’ve seen aftermarket diagrams swap the shift cam and fork positions. This catalog shows them correctly under Shift Cam.Fork and Shift Shaft. If you’re rebuilding a bottom end, cross-reference every bearing and washer here before you order.

55 Pages of Factory Part Numbers

At 55 pages, this isn’t a thick binder—it’s a focused parts guide. Each page is a clean microfiche screenshot with a parts table. The Foreword explains how to read the catalog: dots indicate assembly components, “AP” means alternate part, “UR” means use specified part only. The Model Label section (page 5) shows how to find your bike’s model code—5HPB for TTR125/P in USA/Oceania, 5HPD for TTR125L/LP. Match your code to the correct part listing, or you’ll order the wrong fuel tank or side cover.

Use OEM Part Numbers to Avoid Fitment Issues

Aftermarket parts catalogs often merge model years or guess cross-references. This is an original Yamaha publication, not a reprint. It lists parts per production code number—for example, the fuel tank graphic is different for USA vs. South Africa. The source is Yamaha Motor Co., Ltd., and the copyright is 2001. If you have a later model with modifications, the manual says to check Yamaha Parts News for updates. That’s real factory support, not a third-party guess.

Fuel System and Carburetor Diagrams

Under Engine, you’ll find Intake, Carburetor, and Fuel sections. The Fuel Tank is under Chassis—page location varies by model code. The carburetor exploded view shows all jets, needle, and gaskets. If you’re cleaning or rebuilding the carb, order the correct main nozzle and pilot jet using the part numbers here. Don’t rely on generic carb kits that include parts for five different bikes.

Suspension and Chassis Components

The Chassis section covers Rear Arm.Suspension and Front Fork (two separate pages). Rear wheel, front brake caliper, steering handle cables—all laid out. If you need a fork seal for the TTR125L, look under Front Fork 2 for the correct parts. The Stand.Footrest page shows the sidestand and peg assembly. I’ve had guys order the wrong brake master cylinder because they used an online parts look-up. This catalog ends that guesswork.

Related manuals you might need: Yamaha YZF-R1 2002 Parts Catalog – OEM Factory Part Numbers”>Yamaha YZF-R1 2002 Parts Catalog, Yamaha GTS1000AE 1993 Parts Catalog – Factory Microfiche PDF”>Yamaha GTS1000AE 1993 Parts Catalog, Yamaha V125 Parts Catalog – OEM Factory Part Numbers & Diagrams”>Yamaha V125 Parts Catalog.

For more background on how internal combustion engines work, see the Internal Combustion Engine”>Wikipedia article on internal combustion engines. For an overview of the automotive industry and parts supply chains, check the Automotive Industry Overview”>Automotive Industry Overview.

Does this catalog include torque specs?

No. This is a parts catalog, not a service manual. Use the Yamaha factory service manual for assembly torque values.

How do I find the correct part number for my TTR125L?

Cross-reference your model code from the model label affixed to your frame (location shown on page 5). The catalog lists part numbers by model code: 5HPB for TTR125/P (USA, Europe, etc.), 5HPD for TTR125L/LP. For example, the fuel tank assembly part number is listed under the Fuel Tank section. Use the numerical index at the back to locate any part by number. This is the same data dealers use. If your bike has modifications, check the Yamaha Parts News updates referenced in the foreword.

Stop guessing and start ordering the right parts. Access the Factory Manual now and keep this PDF on your phone or tablet for the next rebuild.