DOHC 4V＋D Complete Engine 124cc / 138cc

DOHC Head

Auto decompression camshaft（EX）

For Monkey(FI)Inlet port

■DOHC 4V＋D head
By increasing the valve curtain area, greatly improves the intake and exhaust eﬃciency.
By order system, titanium valve spring retainers can be selected.(Option)■Hollow camshaft (auto decompression camshaft)
It becomes possible to change the valve timing. Adopt the auto decompression mechanism.

Ceramic plated cylinder（for 138cc）

Stroke up crankshaft（for 138cc）

Installing a ball bearing
in the support plate■Ceramic-plated CylinderAdopted the all-aluminum ceramic-plated cylinder with excellent heat dissipation, durability and hermeticity.
■Crankshaft support plate (3-point support bearing built-in)
By installing a ball bearing in the support plate, change the crank shaft journal part from two into three-point support.
The deﬂection of the crankshaft that occurs in high rotation range of the engine can be limited.

DOHC 4V＋D Complete Engine 124cc / 138cc

For Monkey(FI)Dedicated manifold / Big throttle bodylarge capacity injector

Bearing hold plateFI CON PLUS（Injection controller）■Our original enhanced crankcase of exclusive design for Monkey (FI).
For the burden to the crankcase which occurs by a big exhaust quantiﬁcation, increasing the case rigidity, it is a high quality
crankcase that has been specially designed every detail. Oil pump drives by directly from crankshaft so that larger volume
of oil delivered double than stock one. Inside diameter of breather pipe is 6mm. Crankcase has additional oil line to cool thepiston and connecting rod small end.

■Use of Primary Kickstarter System:

Primary kick starting system can be start the engine at any gear if clutch has released.
Especially this system is valuable system for competition use.

■Heavy-duty clutch
Adopt 5 disks; you can eliminate the slip of the clutch that occurs in high-powered engine.
Clutch cover is made of magnesium die-casting with brown painting.
Wet Special clutch (primary type) with the slipper clutch speciﬁcation.
■Close ratio transmission: can be selected from two types of TAF 5 speed close ratio transmission.
Complete standard equipment will be S-Touring 5-speed. By order system, can be specify the Super Street 5-speed close
ratio transmission. (Option)■Dedicated manifold / Big throttle body / large capacity injector
Equiped the big throttle body, dedicated manifold and large capacity injector.
■Monkey (FI) Complete Engine exclusive FI CON PLUS is attached.
PC connection is not required.
※It is necessary to use the high-octane gasoline.
※The exhaust system for Monkey(FI) cannot be installed into this complete engine.
Necessary to change the exhaust system to for Monkey (carburetor model).
※Ignition system parts are not attached. Please use the genuine parts.
※Do not install the HID kit simultaneously.
22201816SAE Power（PS）

14121086Name
Applicable model
Item number420345678910RPM（x1000）DYNOJET

11121314

DOHC4V＋D Complete Engine＋Big throttle body
＋FI CON PLUS
＋Power Silent Oval Exhaust System■138cc■124cc■Hyper S-stage Bore up Kit 88cc＋Basic Exhaust System■Monkey（FI）Stock Engine＋Standard Exhaust System※To prevent the engine from getting damaged, keep speciﬁed rpm range.
※Tested at the condition of our test facility, actual power may vary.

DOHC 4V＋D Complete Engine
Monkey（FI）（AB27-1900001〜）
124cc: 01-00-9351
138cc: 01-00-9352