Hot Rods +5mm Stroker Crankshaft 727cc - Yamaha Raptor 700 (2006-2025)

727cc of Pure Power - No Machining Required

Hot Rods +5mm stroker crankshaft for Yamaha Raptor 700. Increases displacement from 686cc to 727cc for serious power gains. Drop-in replacement that uses your stock pistons—no case machining needed.

Why This Stroker Crank

✓ +5mm stroke = 727cc displacement (+41cc over stock)
✓ Drop-in install - no case or head machining
✓ Uses stock pistons (or upgrade to big bore)
✓ Factory assembled, balanced, and trued
✓ Complete with rods, bearings, webs
✓ Fully rebuildable with Hot Rods parts
✓ DIN Class 9+ gears (premium quality)

What's Included

- Complete +5mm stroker crankshaft
- Hot Rods connecting rods (installed)
- Top end bearings (installed)
- Crankshaft webs
- Factory balanced and trued
- Ready to drop in

Fits These Raptors

✅ 2006-2025 Yamaha Raptor 700 (all models)

All YFM700R, YFM700RSE, YFM700 Raptor models

Quick Specs

Part #: 4178
SKU: 421-4178
Weight: 16.15 lbs
Stroke: +5mm over stock
Displacement: 727cc (with stock bore)
Big Bore Option: 760cc+ with 105mm cylinders
Gears: DIN Class 9 or higher
Balance: CNC machined and dynamically balanced

Power Gains You'll Feel

💪 +41cc displacement with stock pistons
💪 Massive torque increase (bottom to mid)
💪 More aggressive power delivery
💪 Even bigger gains with big bore kit
💪 Proven dyno results

Build Options

**Option 1: Stock Bore Stroker (727cc)**
- This stroker crank + stock pistons
- Budget-friendly power upgrade
- No cylinder work needed

**Option 2: Big Bore Stroker (760cc+)**
- This stroker crank + 105mm big bore kit
- Maximum naturally aspirated power
- Insane torque and horsepower

No Machining Required

Unlike some stroker cranks, this Hot Rods +5mm stroker is a true drop-in:
- No case machining
- No head machining  
- No spacer plates
- Stock piston height works perfectly

What You'll Also Need

For complete stroker build:
- Main bearing & seal kit (K053)
- Complete gasket kit
- Engine assembly lube
- Fresh oil and filter

Optional for max power:
- Big bore cylinder kit (105mm)
- High-compression piston kit
- Performance camshaft

Installation Notes

⚙️ Difficulty: Advanced (complete engine rebuild)
🔧 Tools needed: Full engine rebuild tools, case splitter, torque wrench
👨🔧 Time: 8-12 hours for complete rebuild
💡 Pro install recommended unless experienced

Why Stroker vs. Big Bore?

**Stroker Pros:**
- More torque (especially low-end)
- Uses stock pistons (cheaper)
- Better for trail/dune riding
- Increased engine braking

**Big Bore Pros:**
- More top-end power
- Higher RPM capability
- Better for racing

**Best of Both?** Stroker + big bore = maximum displacement and power across the entire RPM range.

Warranty

🛡️ Hot Rods factory warranty against defects
🔄 No returns on installed crankshafts

Questions?

📞 541-668-7503
📧 Support@dunegoonshop.info

Ships same day before 3pm EST ⚡
20 in stock and ready to ship!