Sherco Sef 300 Racing
The Sherco Sef 300 Racing has a top speed of ~145 km/h (estimated; note: top speed is rarely a priority metric for enduro machines), produces ~38 hp and weighs ~108 kg. Motoryk rates it 7.8/10.
Sherco SEF 300 Racingは、フランスのメーカー、シェルコのエンデューロラインナップの一部です。このラインナップは、トライアルとオフロード競技をルーツとして2000年代初頭から開発されてきました。SEF（シェルコエンデューロ4ストローク）レーシングシリーズは2010年代に大幅に改良され、250ccモデルと大排気量モデルのギャップを埋めるために300ccバリアントが導入され、クロスカントリーやハードエンデューロの競技者向けに300ccバリアントが導入されました。ルーフオブアフリカなどのイベントで表彰台を獲得したり、ダカールラリーのサポートクラスに参加したりすることで注目を集め、競争力のあるエンデューロブランドとしてのシェルコの評判を確固たるものにしました。
~38 hp
パワー
~30 Nm
トルク
~108 kg
ウェイト
~145 km/h (estimated; note: top speed is rarely a priority metric for enduro machines)
トップスピード
~4.5 L/100km (estimated; highly variable in off-road/enduro conditions)
燃料
裸
ボディ
Video Review
購入者が知っておくべきこと
Fuel Injection Advantage
The SEF 300 Racing features a Keihin fuel injection system, eliminating cold-start jetting issues common with carbureted enduro bikes. This makes it highly reliable across varying altitudes and temperatures.
Watch the Coolant System
A known issue on used examples is coolant hose wear and water pump seal failure — inspect these carefully before buying. Catching this early prevents costly engine overheating damage.
Strong Resale Value
Sherco's limited North American dealer network means used SEF 300 Racing models hold value well due to lower supply. A well-maintained example typically retains 70–80% of its value within the first two years.
年別の世代と仕様
SEF 300レーシングの初発売。ヤマハ製4ストローク300ccエンジン、アルミフレーム、エンデューロ重視のセットアップ。
燃料噴射準備の更新、サスペンション設定の改訂、エルゴノミクスの改善、競技用に改良されたフレームジオメトリ。
新しいエンジンマッピング、Kayabaサスペンションの更新、ボディワークの改良、パワーデリバリーの改善、信頼性の向上。
改良されたシャーシ、最新の電子パッケージ、新しいエアボックスデザイン、改良されたトラクションコントロールとエンジンブレーキ設定。
中古購入者レビュー
"Brilliant underdog enduro bike — but only buy a well-documented example."
$4,500-$7,500 usedThe SEF 300 Racing is a proper weapon if you know what you're getting into. Sherco's 300cc two-stroke delivers savage, usable power that'll embarrass bigger four-strokes on tight enduro sections, and the chassis feels genuinely planted when you're pushing hard through rough terrain. French engineering means the suspension setup is properly sorted from the factory — don't let the brand obscurity fool you. Used examples need careful inspection though. Check the power valve mechanism religiously — neglected ones seize and it's a nasty repair. Coolant systems on older models develop weeping joints around the water pump housing. Insist on full service history and verify the top end has been refreshed within the last 40 hours. Parts availability has improved dramatically but it's still not KTM-simple if something exotic fails. If the previous owner raced it hard and skipped maintenance, walk away without hesitation. Find a well-documented example and you've got a genuinely underrated enduro machine that punches well above its price point.
Top 10 Accessories
Curated picks for the Sherco Sef 300 Racing — owned, ridden, recommended.
よくある問題
🔥 2 CRITICALMilky oil, weep hole leaking, coolant level drops
Erratic idle, hard starting, check stator output voltage
Hard cold starting, ask for valve service history
Inspect welds around pivot area for cracks or repairs
✅購入前チェックリスト
Decent but high-maintenance, needs meticulous servicing
Full Specifications
Rivals & Alternatives
Bikes that buyers cross-shop with the Sherco Sef 300 Racing
Ktm 300 Exc Tpi
Husqvarna Te 300
Husqvarna Tx 300i
Gas Gas Ec 300
Sherco Se 300i
Compare Sherco Sef 300 Racing Side-by-Side
compare_arrowsSpecs, power, weight & buyer verdict — head-to-head with the bikes most often cross-shopped.
Sherco Sef 300 Racing vs Ktm 300 Exc Tpi
Specs · Power · Buyer verdict
Sherco Sef 300 Racing vs Husqvarna Te 300
Specs · Power · Buyer verdict
Sherco Sef 300 Racing vs Husqvarna Tx 300i
Specs · Power · Buyer verdict
Sherco Sef 300 Racing vs Gas Gas Ec 300
Specs · Power · Buyer verdict
Sherco Sef 300 Racing vs Sherco Se 300i
Specs · Power · Buyer verdict
More Sherco Sef 300 Racing Guides
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Discussion
Frequently Asked Questions
What are common problems with the Sherco Sef 300 Racing? +
Water pump seal failure, coolant contamination: Milky oil, weep hole leaking, coolant level drops (moderate) | Stator and electrical gremlins: Erratic idle, hard starting, check stator output voltage (moderate) | Valve clearance neglect, tight valves: Hard cold starting, ask for valve service history (serious)
Is the Sherco Sef 300 Racing a good motorcycle? +
Brilliant underdog enduro bike — but only buy a well-documented example. Rating: 7.8/10. Best for: Experienced enduro riders wanting lightweight two-stroke performance. Avoid if: You want simple dealership parts and service access.
What is the horsepower of the Sherco Sef 300 Racing? +
The Sherco Sef 300 Racing produces ~38 hp @ 9,000 rpm (estimated), with ~30 Nm @ 7,500 rpm (estimated) of torque. Top speed: ~145 km/h (estimated; note: top speed is rarely a priority metric for enduro machines).
Is the Sherco Sef 300 Racing good for beginners? +
Yes — the Sherco Sef 300 Racing is a reasonable choice for new riders (38 hp is manageable), weighing 108 kg. Experienced enduro riders wanting lightweight two-stroke performance
Is the Sherco Sef 300 Racing reliable? +
Owners report 2 critical issues to watch for on the Sherco Sef 300 Racing, notably: Valve clearance neglect, tight valves (Hard cold starting, ask for valve service history). Buy with a pre-purchase inspection.
Is the Sherco Sef 300 Racing good for daily use? +
Experienced enduro riders wanting lightweight two-stroke performance Fuel: ~4.5 L/100km (estimated; highly variable in off-road/enduro conditions).
How fast is the Sherco Sef 300 Racing? +
The Sherco Sef 300 Racing reaches a top speed of ~145 km/h (estimated; note: top speed is rarely a priority metric for enduro machines), producing 38 hp at 108 kg curb weight. Real-world performance depends on rider weight, gearing, and road conditions.
What gear should I buy for a Sherco Sef 300 Racing? +
Motoryk has curated a Top 10 gear list specifically for the Sherco Sef 300 Racing, covering engine oil, tires, chain, battery, and brake pads — see motoryk.com/bikes/sherco/sef-300-racing/top10. Each pick is matched to this bike's spec.
