RM-Z250

• The primary fuel injector is at the bottom of the throttle body and sprays fuel at the butterfly valve for outstanding fuel and air atomization. The secondary injector is positioned in the air cleaner inlet duct so the fuel and air have more time to mix and cool before entering the engine.
• To feed the new twin-injector system and mix the fuel and air charge for outstanding throttle response, the RM-Z250 uses a high-capacity fuel pump.
• The special design of the throttle body eliminates complex control linkage, so the rider feels a more direct connection to the engine.
• The intake camshaft profile has more valve lift that the prior generation RM-Z250, increasing power at all engine speeds.
• The cam chain tension adjuster and guide have been designed to reduce friction and mechanical loss.
• The compact aluminum cylinder is finished with Suzuki Composite Electrochemical Material (SCEM) coating for durability, lightweight, and efficient heat transfer.
• The machining process at the piston pin holes is changed to reduce stress at the piston crown to increase reliability.
• Engine starting remains simple, due to a proven kickstarter and automatic decompression system that works precisely and efficiently (eliminating the need for a heavy and costly electric start system).
• The high-flow exhaust system has a longer head-pipe, tapered mid-section, and multi-layer silencer with good flow through the entire rev range, with an emphasis on low-rpm performance.
• The exhaust silencer is a four-layer design that enhances performance and maintains compliance with AMA sound regulations.
• The resin engine protectors help guard the coolant pump (on the right) and the stator cover (on the left) from debris and stones.

There are two S-HAC modes riders and off-riders can choose for the best option per their skill level and starting conditions.

Mode A: For hard surfaces or slippery conditions at the starting gate. In this mode, S-HAC alters ignition timing at the moment of launch and the ride over the gate to reduce wheel slip to deliver a smooth takeoff. It also advances ignition timing during this sequence for stronger acceleration. After six seconds or when you reach fourth gear, the system shuts off and returns to normal ignition timing.

• Benefit of Mode A: For novice riders, and/or hard and slippery traction conditions, use Mode A for a more controlled launch.

Mode B: When conditions at the starting gate have better traction, and a more aggressive launch is desired. S-HAC will advance the ignition timing to allow increased throttle response and stronger acceleration off the line. The ignition timing alternation is in a similar sequence as Mode A, but with increased overall timing. One of three conditions will return the ignition to normal operation (whichever happens first): After six seconds or when you reach fourth gear, the system shuts off and returns to normal ignition timing.

• Benefit of Mode B: For skilled riders, and/or good starting conditions, use Mode B for a more aggressive launch.

Base Mode: Standard power launch, no action required on the S-HAC switch.

• The engine mount material is changed to aluminum, rather than steel, for reduced weight.
• The swingarm is shaped using an innovative hydroforming process that maintains strength but weighs 0.6 pounds (270 grams).
• The hydroforming process enabled engineers to create tapered swingarm beams that increased rigidity, while reducing heavier assembly welding.
• Hexagonal aluminum rails are used on the sub-frame for lighter weight, a slimmer appearance, and easier air filter access.
• The sub-frame rails are moved inward to slim the bodywork but are also raised to provide additional space for the larger air cleaner.
• Not only is the new sub-frame narrow, but all of the body work is slim, so the rider can move freely in the cockpit, especially during spirited riding.
• The KYB-supplied shock absorber has a thin-wire spring, spring guide, cushion rubber guide, and lower link that are lightweight and have better movement reaction. The spring and link weigh a pound (447.5 grams) less than the prior generation’s parts.
• This KYB shock has specialized damping force circuits and a refined rear lever ratio to help improve the suspension’s traction characteristics.
• The damping force adjusters have a wide tuning range, so the settings can better match the conditions and the rider’s style.
• The high-performance KYB coil spring front fork has legs with the same springs and damping force components, so front suspension tuning and maintenance is balanced and easy: a great benefit during frequent riding.
• This fork uses a free-piston design that separates air and oil to optimize the damping characteristics. The design also helps control the damping cartridge’s pressure and spring recoil, so the fork action remains supple and precise.
• The Renthal aluminum tapered handlebar has a flatter bend with less pull-back than prior models to aid rider control during aggressive maneuvering.
• A rigid, but lightweight upper fork bracket complements the front suspension and handlebars.
• To improve stopping performance and feel, a 270mm diameter, wave-style front brake rotor and a Nissin two-piston brake caliper are used.
• The brake pad material was developed for the RM-Z250 to improve performance. The master cylinder is a push rod type that more effectively transmits the squeezing force that the rider applies to the lever.
• The rear brake master cylinder hugs the frame beam to reduce dirt contamination and the chance of the rider’s boot touching it during riding.
• The wheels feature black anodized D.I.D Dirt Star rims with a cross-section design that maintains strength while reducing un-sprung weight.
• To match the handling potential of the RM-Z250, the wheels are fitted with racetrack-developed Dunlop Geomax MX33. Additionally, the rear tire is nearly a half-pound (160 kg) lighter than the tire used on the prior generation RM-Z250.
  Suzuki beak-inspired styling has a sharp front fender and radiator shroud shapes that blend into the frame’s side covers and an upswept tail, to promote the impression of speed while reducing weight and easing service.
• The functional styling and the motorcycle’s trim chassis permits a variety of rider positions that facilitate control and comfort.
  Compared to the prior RM-Z250, the 2022 edition has ergonomic improvements from the new bodywork, the rider’s footpegs are moved 0.12 inches (3.3 mm) forward and 0.2 inches (5.2 mm) upward, while the handlebar grip position is moved 0.3 inches (7.4 mm) forward and 0.15 inches (3.8 mm) downward, to create a high level of rider-control during competition.
• The plastic fuel tank weighs a half-pound less than the prior model’s aluminum tank. Fuel capacity is 6.3 L (1.7 US gallons).
  The seat base, inner fenders, and side covers were developed to reduce moisture and dirt from reaching the air cleaner. This helps prevent debris from contaminating the air filter.
• The slimmer seat has a specialized foam density to aid the rider’s control of the motorcycle. The seat has a large gripper panel that runs nose-to-tail on the cover.
  The Suzuki Champion Yellow bodywork is enhanced with distinctive striping and modern logo graphics.