High engine kit 145 4 valves TAKEGAWA - Honda Monkey JB-03 / JB-05 - Dax JB-04 / GROM

Name: High engine kit 145 4 valves TAKEGAWA - Honda Monkey JB-03 / JB-05 - Dax JB-04 / GROM
Brand: TAKEGAWA
Price: 1300.00 EUR
Availability: InStock

€1.300⁰⁰

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🗒 Description ↓

⚠️ Product intended exclusively for circuit/competition use (cylinder capacity > 125 cm³, not approved on open roads).

The top of the SOHC range SP Takegawa. The cylinder head Super Head 4V+R (1 camshaft, 4 valves) pushes the limits of intake and exhaust efficiency of a single cylinder, with an engine character that favors power handling at high revs.

Highlights

Cylinder head 1 cam / 4 valves : gas passage surface greatly increased, beyond a large 2-valve
Central spark plug, valve angle, combustion chamber and conduits optimized for high efficiency
Lightweight, compact architecture — the quintessence of the SOHC cylinder head
Ducts optimized for big injection body SP Takegawa

Technical characteristics

Manufacturer reference	SP Takegawa 01-05-0644
Valves	Intake 21.5 mm × 2 / exhaust 18.5 mm × 2 (tails Ø4.0 mm)
Valve springs	Variable pitch (2 stages), anti-overspeed
Rocker arms	Roller on bearings (low friction)
Camshaft	Self-decompression (10/10D) on ball bearings: easy kick
Cylinder	Cast iron jacketed aluminum — 54 mm bore, 63.1 mm stroke, 12.0:1 volume ratio
Piston	Forged/machined aluminum, light and rigid
Candle	M8 — compatible with M5 SP Takegawa temperature probe (thermometer sold separately)

Compatibility

Honda Monkey 125 (JB03 / JB05), GROM (JC92), Dax 125 (JB04 / JB06). ⚠️ Check the exact type of your machine before ordering.

Good to know — essential additional parts

To use this kit, it must be combined at least with:
• a increased injector KITACO (×1.6)
• a intake body 34 mm KITACO
• a “decatalyzed” exhaust
• a custom mapping in original ECU

⚠️ Without the custom mapping, you will be capped at the original maximum speed and at a power of approximately 13 hp at the wheel. Assembly, compatible parts and mapping carried out at the NoxCustom workshop.