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Suzuki RM465 1982 Parts & Accessories

First introduced in 1975 to succeed the TM series, the Suzuki RM Series ("Racing Machine") stands as Suzuki's flagship line of dedicated two-stroke motocross racing motorcycles. Built on technology developed in Suzuki's World Championship Motocross campaigns, the full-size RM family—anchored by the mid-class RM125 and open-class RM250—pioneered major off-road engineering innovations, including long-travel suspensions, the revolutionary Full-Floater single-shock monoshock system in 1981, liquid cooling, and Suzuki Composite Electrochemical Material (SCEM) cylinder plating. Praised by racers for their razor-sharp cornering, lightweight chassis dynamics, and punchy powerbands, the full-size RM models remained in continuous production until 2008 before two-stroke market shifts led to the transition toward the four-stroke RM-Z lineup.

• Engine Options: 124 cc (RM125), 249 cc (RM250), 372 cc (RM370), 396 cc (RM400), or 465/492 cc (RM465/RM500) 2-stroke single-cylinder
• Power Output: ~38 HP @ 10,500 RPM (late-era RM125) up to 55+ HP @ 7,000 RPM (RM500)
• Induction & Cooling: Air-cooled (classic era) or Liquid-cooled (1981+ RM125 / 1982+ RM250) with Keihin/Mikuni flat-slide carburetors and AETC (Automatic Exhaust Timing Control) powervalves
• Chassis Architecture: High-tensile steel or chromoly double-cradle frame with removable aluminum subframe and aluminum swingarm
• Front Suspension: Fully adjustable Showa or Kayaba inverted (USD) telescopic front forks providing up to 310 mm (12.2 in) wheel travel
• Rear Suspension: Link-type Full-Floater single rear shock absorber, fully adjustable for spring preload, high/low-speed compression, and rebound damping
• Braking System: Internal expanding drum brakes (1970s) evolving to dual hydraulic front and single rear disc brakes with floating calipers
• Drivetrain: Close-ratio 5-speed or 6-speed manual transmission with heavy-duty wet multi-plate clutch and 520 chain final drive
• Wheels & Tires: 80/100-21 front and 100/90-19 or 110/90-19 rear knobby motocross tires on lightweight aluminum Excel rims
• Dimensions & Mass: 945 mm to 960 mm (37.2–37.8 in) seat height; dry weight ranging from 87 kg (191 lbs) (RM125) to 103 kg (227 lbs) (RM500)

Designed to provide junior and entry-level amateur racers with mini-motocross performance, the Suzuki RM Youth & Mini-Cross Range (RM50 / RM60 / RM65 / RM80 / RM85 / RM100) scaled down Suzuki's factory race technology for smaller riders. Expanding from early air-cooled machines into liquid-cooled, power-valve-equipped mini racers, the series was highlighted by the long-running RM80 and its successor, the RM85 (including the large-wheel RM85L variant). Known for class-leading low-to-midrange torque and sharp handling, these mini racers utilized rigid tubular steel frames, Showa inverted front forks, piggyback reservoir rear shocks, and hydraulic disc brakes to serve as a stepping stone to full-size competition.

• Engine Options: 64.7 cc (RM65), 79 cc (RM80), 84.7 cc (RM85), or 99 cc (RM100) liquid-cooled 2-stroke single-cylinder with SCEM cylinder plating
• Power Output: ~15 HP (RM65) up to 25–29 HP @ 11,500 RPM (RM85 / RM100)
• Induction & Fueling: Keihin PE28 or Mikuni flat-slide carburetor with case-reed or piston-reed valve induction and Digital CDI ignition
• Chassis Architecture: Tubular steel double-cradle frame with reinforced front gusseting and aluminum swingarm
• Front Suspension: 37 mm Showa inverted (USD) telescopic front forks with 20-way adjustable compression and rebound damping
• Rear Suspension: Link-type Showa single rear shock absorber with piggyback reservoir, fully adjustable for preload, compression, and rebound damping
• Braking System: Hydraulic front disc brake with twin-piston caliper and single rear hydraulic disc brake
• Transmission & Drivetrain: 6-speed constant-mesh manual transmission with rack-and-pinion operated wet multi-plate clutch and chain drive
• Wheels & Tires: 70/100-17 front and 90/100-14 rear (standard RM85) or 70/100-19 front and 90/100-16 rear (RM85L Big Wheel)
• Dimensions & Mass: 850 mm (33.5 in) seat height; curb weight of 73 kg (161 lbs) with a 5.0-litre (1.3 US gal) fuel tank capacity