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Yamaha SR 400 Wrench Monkees Gibbon Slap
2014
2014
The 2014 Yamaha SR400 "Gibbon Slap" by Wrenchmonkees represents a celebrated custom iteration of a motorcycle with a rich heritage. The SR400 itself, a single-cylinder thumper, has been a staple in the Japanese market since 1978, known for its classic styling and straightforward mechanics. This particular Wrenchmonkees custom builds upon that solid foundation, transforming it into a distinctive café racer. In its stock form, the SR400 competes directly with other retro-inspired singles like the Royal Enfield Classic 350 or the Kawasaki W series (though the W800 is a larger displacement twin), offering a simpler, more elemental riding experience.
At the heart of the Gibbon Slap lies the SR400's air-cooled 399.0 ccm (24.35 cubic inches) single-cylinder engine. This powerplant delivers 22.9 HP (16.7 kW) at 6500 RPM, providing ample motivation for its intended purpose. Torque figures are a healthy 27.4 Nm (2.8 kgf-m or 20.2 ft.lbs) arriving early at 3000 RPM, indicating a tractable engine character well-suited for urban environments and spirited backroad riding. The fuel tank capacity of 12.00 litres (3.17 US gallons) offers a decent range, allowing for extended rides between fill-ups. While not a powerhouse, the engine's output and low-end grunt contribute to an engaging and accessible ride.
Riding characteristics of the Gibbon Slap lean towards a nimble and engaging experience, typical of a well-executed café racer. The seat height, at 790 mm (31.1 inches) (if adjustable, lowest setting), provides a comfortable reach for a wide range of riders, contributing to a planted feel at stops. The custom's focus on minimalist design and lighter components likely enhances the SR400's already agile handling. Expect a slightly forward-leaning posture, with a focus on rider involvement rather than plush comfort, consistent with café racer ergonomics. The SR400's reputation for balance and flickability would be amplified in this custom form.
The Wrenchmonkees Gibbon Slap, based on the Yamaha SR400, caters to enthusiasts who appreciate classic motorcycle aesthetics, mechanical simplicity, and a hands-on riding experience. This custom build appeals to those seeking a unique, custom-styled machine that stands apart from mass-produced motorcycles. It's for the rider who values an authentic connection with their machine, enjoys the mechanical engagement of a single-cylinder engine, and perhaps appreciates the subtle nod to motorcycling's golden era. The verdict is a motorcycle that prioritizes style and rider involvement over outright speed or modern conveniences, offering a distinctive and enjoyable analog ride.
✅ Why buy this bike?
• Authentic classic styling with modern reliability, a true retro experience without vintage headaches. • Lightweight and nimble chassis makes it incredibly fun and easy to maneuver in urban environments. • Air-cooled single-cylinder engine offers simple mechanics and excellent fuel efficiency for daily commuting. • Kickstart only provides a unique, engaging rider experience and reduces potential electrical issues. • Exceptional build quality and attention to detail from Wrench Monkees, a bespoke, collectible motorcycle. • Holds resale value well due to its limited production, unique styling, and cult following.⚠️ Things to consider
• 399cc single cylinder lacks highway passing power, struggling at sustained high speeds. • Kickstart only can be inconvenient and challenging for some riders, especially when cold. • Basic suspension and braking components limit aggressive riding capabilities and comfort on rough roads. • Small fuel tank capacity necessitates frequent refueling on longer journeys, impacting range. • Limited passenger comfort due to the minimalist seat and lack of grab handles.The Yamaha SR 400 Wrench Monkees Gibbon Slap produces 23 HP, fitting A2 license limits (max 35 kW / 47 HP). For riders 18+.
Estimated average for 399cc class: 45-60 mpg (4.0-5.5 L/100km)
⛽ Tank: 12.00 litres (3.17 US gallons)
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