The 2012 Suzuki RM-Z450 is a 449cc, fuel-injected, four-stroke motocross bike with a five-speed transmission. Suzuki’s 2012 U.S. sales guide lists a 47 mm Showa inverted fork, Showa rear shock, 249 lb weight and 1.6-gallon fuel tank. For service or parts, confirm the bike’s exact model and market code: catalog listings identify both RM-Z450L1 and RM-Z450L2 versions for 2012.
2012 Suzuki RM-Z450 specifications
The figures below are from Suzuki’s 2012 U.S. sales guide; specifications may differ by market, and these should not be treated as current values. Suzuki’s 2012 RM-Z450 sales guide lists the following:
| Category | Suzuki’s listed specification |
|---|---|
| Engine | 449cc, liquid-cooled, four-stroke, DOHC, four valves |
| Bore × stroke | 96.0 × 62.1 mm |
| Compression ratio | 12.5:1 |
| Fuel system | Fuel injection |
| Lubrication | Suzuki Advanced Sump System |
| Transmission | Five-speed constant-mesh |
| Final drive | D.I.D. 520MXV4 chain, 114 links |
| Front suspension | 47 mm Showa inverted fork; pneumatic/coil spring, oil damping, adjustable; 12.2 in travel |
| Rear suspension | Showa piggyback-reservoir shock with linkage; 12.2 in travel |
| Brakes | Single hydraulic 240 mm disc front and rear, with Nissin calipers |
| Original tires | Bridgestone M403 front, M603 rear |
| Weight | 249 lb, as listed by Suzuki |
| Fuel capacity | 1.6 U.S. gal |
| Seat height | 37.6 in |
| Ground clearance | 12.8 in |
| Wheelbase | 58.9 in |
| Overall length × width | 86.2 × 32.7 in |
| Original MSRP | $8,399, the historical figure in Suzuki’s 2012 U.S. guide |
Finding the correct 2012 RM-Z450 manual
Start with the model code and market, rather than relying only on the year printed in a listing. Suzuki’s service portal index includes an RM-Z450 (L1) owner’s service manual. A 2012 L1 catalog listing identifies English owner’s manual part number 99011-28H53-01A, while a separate catalog listing identifies a 2012 L2 model. These listings show why “2012 RM-Z450” alone may not be enough to select a manual.
Check the bike’s identification and the manual’s stated model/market applicability before ordering or following procedures. Do not assume an L1 manual applies to an L2 motorcycle or to every country’s version.
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Maintenance guidance and service intervals
Use the exact owner’s/service manual for maintenance intervals, fluid specifications, adjustment procedures and torque values. A surfaced RM-Z450 maintenance-chart excerpt says service frequency depends on riding conditions and calls for more frequent maintenance in severe conditions; it names the spark plug, air cleaner, engine oil and filter, oil strainers, cooling system, clutch, cables, hot starter and throttle body. However, that excerpt does not establish that it is the precise 2012 L1/L2 manual edition, so it is not a reliable basis for assigning model-specific service-hour intervals. The manual mirror’s RM-Z450 excerpt can help identify topics to check, but confirm instructions in the correct manual.
2012 RM-Z450 parts and fitment
Catalog listings for the 2012 RM-Z450 surface assemblies such as the air filter, fuel pump, water pump, radiator, clutch, transmission, fork, steering, wheels, brakes and rear shock. A catalog category is not proof that a specific replacement part fits every 2012 bike. Before buying, match the exact fiche and model/market code to the motorcycle; where fitment remains unclear, confirm by VIN with the supplier.
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2012 RM-Z450L1 catalog listing and 2012 RM-Z450L2 catalog listing are useful starting points for identifying the relevant catalog version. Listings do not establish current stock, price, regional compatibility or Suzuki endorsement.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What the published figures do—and don’t—tell you
Suzuki’s year-specific guide gives a solid factory specification reference, including the engine, suspension, brakes and dimensions. It does not establish this bike’s present condition, reliability, resale value, recall status or performance after years of use. Those questions require current, bike-specific information rather than conclusions drawn from the original specification sheet.
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- Please make sure the model and year in the link matches before you buy
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