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The BigRacing cylinder range presents itself as extremely high-performance cylinders from the brand with the 2 stars. Considered hyper racing, they nevertheless offer a very interesting performance and reliability ratio for regular and intensive use, even daily.
Made of aluminium, with a displacement of 88cc (with the appropriate 45mm stroke crankshaft), this range of kits is mainly intended for 50cc motorcycles with Derbi Euro 2 engines (before 2006)
Combined with a modified exhaust system, full intake and transmission, maximum power, torque and top speed are significantly increased!
To find even more performance from Stage6, you will have to turn to the R/T range, which is more radical and clearly intended for use on the circuit.
Summary technical characteristics:
Aluminum cylinder
Single-ring piston
Designed around a 50mm piston (not just a rebore)
Transfers and compression designed for maximum reliability
88cc displacement with long stroke crankshaft
One-piece cylinder head
Discreet design with 49cc lettering
Pack with exhaust or crankshaft possible
All spare parts available (complete piston, gasket set)
We recommend with this kit at least : Ø28mm carburetion, 45mm stroke crankshaft, 90mm AIRSAL connecting rod or other if desired, reinforced bearings, adapted exhaust, low engine/high engine alignment, ignition according to the revolutions, cold spark plug grade B10 (31 in DENSO) see B105 (34 in DENSO), …
As an option, we offer a stage 1 preparation. This preparation is a modification of the exhaust port by increasing the diagrams and improving the conduit, it increases the cylinder performance. An improvement of the skirt bottoms is also included in this modification. Allow a little extra time for this preparation!
This top engine is mounted on 50cc motorcycles with gearboxes equipped with the DERBI Euro1 and Euro2 engine:
BULTACO Astro enduro 50cc
BULTACO Lobito supermoto 50cc
DERBI GPR 50 Nude before 2004 (EBS050)
DERBI GPR 50 Racing before 2004 (EBS050)
DERBI GPR 50R Replica year 2001 to 2004
DERBI GPR 50cc year 1998 to 2001
DERBI Senda 50cc before 2000 (tubular frame)
DERBI Senda 2000 50cc before 2004 (perimeter frame) Euro2
DERBI Senda DRD supermotard before 2000 (tubular frame)
DERBI Senda DRD supermotard before 2004 (perimeter frame) Euro 2
DERBI Senda Enduro before 2000 (tubular frame)
DERBI Senda R DRD Enduro before 2000 (tubular frame)D
ERBI Senda R DRD Enduro before 2004 (perimeter frame) Euro2
DERBI Senda SM before 2000 (tubular frame)
DERBI Senda SM before 2004 (perimeter frame) Euro 2
DERBI Senda X-Race 2000 before 2004 (perimeter frame) Euro 2
DERBI Senda X-Race Trail before 2000 (tubular frame)
DERBI Senda X-Trem Enduro before 2000 (tubular frame)
DERBI Senda X-Trem Enduro before 2004 (perimeter frame) Euro 2
DERBI Senda X-Trem SM before 2000 (tubular frame)
DERBI Senda X-Trem SM before 2004 (perimeter frame) Euro 2
GILERA GP Replica 50cc
GILERA GSM 50cc
GILERA HAK Euduro 50cc
GILERA RCR Euduro 50cc (tubular frame)
GILERA SMT SM 50cc (tubular frame)
GILERA Sioux Enduro 50cc
GILERA Zulu Enduro 50cc
And many other models...
Reference: CK.12.780.GR
A kit 80cc aluminum version at ITALKIT long stroke (43mm) with a stud bolt with a piston in high-end two-segment. In a clear concocted power on your DERBI.
Reference: CK.12.749.GR1
Top racing engine DERBI euro 1 & 2! 43 mm special race kit 80cc Ø47,6mm, 6 transfers, large exhaust boosters .... A real monster performance, accompanied by a crankshaft long race 43mm.
Reference: 11011875
An ultra powerful kit known and recognized by all runners or track pilots.
Reference: 23174.00
A very well worked set for an amazing power without neglecting the reliability time! This is a high motor which is often used in run or circuit, it shows how much he was powerful and reliable because even pushed to conditions extreme remain tenacious.
Reference: 11000974
New in 2014, a real powerhouse for DERBI euro 1 & 2.
Reference: EQ-997-43
The famous 50mm (85cc) but BARIKIT aluminum version with sapphire piston and cylinder head stud! A powerful cylinder to accompany a good engine configuration. 50cc motorcycle with engine DERBI euro 1 or 2.
Reference: EQ-918-S
The direct competitor of the AIRSAL X-TREM, it has a stud bolt, a sapphire blue treated piston ... High quality complete motor, special long stroke 45mm.
Reference: 23176.00
A high engine worked on high speeds for an even greater extension than on the 90cc. He is also often used in run or track, it shows how much he was powerful and reliable because even pushed to extreme conditions remain tough.
Reference: CK.12.781.GR
A kit 80cc aluminum version at ITALKIT long stroke (43mm) with a stud bolt with a piston mono-upscale segment. In a clear concocted power on your DERBI.
Reference: 01087650
The famous AIRSAL RED Special X-TREM for 45mm stroke, the power and torque galore for a discount on your motorcycle DERBI euro 1 & 2.