2018 Alta Redshift SM Dirt Bike Torque Specs

2018 Alta Redshift SM Dirt Bike Torque Specs

Shop parts for a 2018 Alta Redshift SM Dirt Bike.

The 2018 Alta Redshift SM takes the electric Redshift platform in a completely different direction — supermoto. Street-legal and built for pavement-focused riding with 17-inch wheels, the SM channels 42 horsepower and 120 ft-lbs of instantaneous torque into a package designed for urban commuting, canyon carving, and supermoto competition. While the chassis and motor architecture mirror the rest of the Redshift family, the SM’s smaller wheels, road-oriented tires, and supermoto suspension setup create unique demands on its fasteners. Proper torque keeps this nimble electric supermoto planted and predictable whether you’re threading through city traffic or attacking a tight supermoto course.

Supermoto Specifics That Matter for Torque

The most obvious hardware difference between the 2018 Redshift SM and its off-road siblings is the wheel size. The SM runs 17-inch front and rear wheels instead of the 21/19 or 21/18 combinations found on the MX, MXR, and EX models. Smaller diameter wheels paired with street tires change the loading characteristics on axle hardware and hub fasteners. Cornering forces on pavement generate higher lateral loads than loose dirt, which means axle nuts and disc bolts are working harder in a different way than they would on a motocross track.

Like every Redshift model, the SM is fully electric — there are no spark plugs, oil drain bolts, cylinder head fasteners, flywheel nuts, or clutch hub nuts to think about. Your wrenching focus stays on the chassis, suspension, wheels, brakes, and bulkhead.

Wheels & Drivetrain

The 17-inch wheel setup on the 2018 Redshift SM uses Warp 9 wheels designed for supermoto applications. The single-speed chain drive transmits all 120 ft-lbs of countershaft torque without any gear changes, and the shorter gearing appropriate for supermoto work means the chain sees high loads during the frequent acceleration and braking cycles typical of this riding style.

Supermoto riding involves frequent hard braking and rapid acceleration, which cycles the chain through high and low tension states constantly. Check your chain adjuster lock nuts and rear axle nut torque regularly — this riding style is particularly adept at working fasteners loose over time.

Brake System

Stopping hardware on the 2018 Redshift SM comes from Brembo, with a two-piston caliper and 260mm rotor handling the front and a single-piston caliper with a 240mm disc at the rear. The SM’s supermoto orientation means the brakes see higher sustained temperatures than on an off-road Redshift model — hard pavement braking generates more heat than dirt, and the demands of supermoto racing push brake hardware to its limits.

Because the SM sees higher brake temperatures than its off-road counterparts, disc bolt integrity is paramount. Apply medium-strength thread locker to every disc bolt and tighten in a star pattern. Heat cycling from aggressive street or track braking can gradually reduce thread-locking compound effectiveness, so inspect these fasteners periodically.

Chassis & Suspension

The 2018 Redshift SM uses the same forged and welded aluminum frame and permanent mold cast swingarm as the rest of the Redshift lineup. The WP 4CS fork and WP link-type rear shock provide the suspension, tuned for the SM’s supermoto application with settings appropriate for pavement and mixed-surface riding. The lower ride height compared to the off-road models doesn’t change the torque specs for chassis fasteners, but it does mean that ground clearance is tighter — protecting the underside hardware matters more when curbs and road hazards are in the picture.

Motor & Bulkhead

The same integrated aluminum bulkhead found on all Redshift models sits at the core of the 2018 SM. Housing the PMAC motor, cooling system, inverter, and single-speed transmission, the bulkhead is both a structural and mechanical hub. Its fasteners rarely need attention during normal riding, but should be inspected after any significant impact — hitting a deep pothole at speed, for instance, or dropping the bike on pavement.

Dry vs. Wet Torque — Why It Matters on Aluminum

Torque specs for the 2018 Redshift SM are given in the dry condition — clean, unlubricated threads with no thread locker present. Apply those same readings to a bolt coated in oil, anti-seize, or thread-locking compound and you’ll over-clamp the joint. On steel components, this might just stretch a bolt slightly. On the Redshift SM’s aluminum frame and castings, it can strip threads permanently. When thread locker is required, reduce the torque by 15–20% from the dry value to achieve the correct clamping force. If a fastener feels like it’s getting tight sooner than expected, stop — forcing it past that point on aluminum is a fast path to damage.

What Happens When Torque Is Wrong

Under-torquing on the 2018 Redshift SM creates risks unique to street and supermoto riding. A loose front axle nut at highway speed is far more dangerous than at trail pace. Insufficiently tightened caliper bolts under the heat and stress of repeated hard pavement stops can lead to caliper flex or movement that destroys braking consistency. A loose handlebar clamp on a supermoto track can cause the bars to twist during aggressive cornering — a terrifying scenario at any speed.

Over-torquing carries the universal aluminum-bike penalty: stripped threads, cracked tabs, and warped components. The Redshift SM’s frame and bulkhead don’t offer second chances if threads are pulled.

Thread Locker Application Points

Use medium-strength (blue) thread locker on these fasteners:

• Rear sprocket bolts
• Brake disc bolts (front and rear)
• Suspension linkage bolts
• Subframe bolts
• Skidframe bolts
• Kickstand pivot bolt

The kickstand pivot bolt on the SM deserves special attention — this is a street-ridden machine, so the kickstand sees constant use and the pivot bolt is known to work loose over time. A dab of medium-strength thread locker keeps it in place without making future removal difficult.

Torque Wrench Recommendations

A 3/8-inch drive click-type wrench covering 10–100 Nm handles the majority of fasteners on the 2018 Alta Redshift SM. Add a 1/4-inch drive wrench for the lower end of the range — disc bolts, master cylinder hardware, and motor cover bolts all sit around 10 Nm where a larger wrench lacks the sensitivity to be precise. Digital wrenches shine in this low-torque range with their real-time readout. Beam-type wrenches remain a solid, maintenance-free alternative for riders who want accuracy without electronics. With two drive sizes in your toolbox, every fastener on the Redshift SM is within reach.

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Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.