Here is the latest addition to the AIRSAL house for DERBI euro 1 and 2! The Spanish brand has launched a superb challenge, to release a high ultra racing engine, very efficient at a price defying all competition. Successful bet for proof with this high AIRSAL Xtrem red 80cc Ø50mm engine. This model is really beautiful, powerful and ingenious, all for a very reasonable price. The cylinder is therefore a Ø50mm, it is intended for an original racing crankshaft therefore 40mm with an original size 90mm connecting rod. This cylinder is not only painted red, it's all an architecture that was created! The rear intake receives 3 transfers to improve the scanning, the lateral ones are 2X2 and they are well worked as a whole. The exhaust is a very large model with bar to boost! How did you do it? Is that impossible? If AIRSAL does it. It simply pushes the booster behind the studs! Allowing a much better evacuation of gases and thus reach 20ch minium against 13ch on the normal 80cc!
Nykasil is an ordinary scanimet (we will still prefer a high-end coating like hard nykasil but it is already of good quality). The cylinder head is a common one-piece, we would still have preferred a stud head to improve cooling and changes in volume, shape ... But this one-piece cylinder head will already fully satisfy 99% of users!
The chamber is a high compression hemispherical model with a polished finish, the assembly offers a compression ratio of 13: 4 (squish advised 0.60mm). The piston is shaped like the ordinary VERTEX model that is often found on AIRSALs, it is of very good quality and it is specific by a treatment on the anti-detonation cap. This piston is equipped with a Ø50X1mm chrome domed nodular segment to allow the highest speeds. The piston is fitted with lateral lubricators which is also very appreciable for longevity.
The attached pack is complete but you will still need base joints to make the squish as it should be which is unfortunate! To conclude, this set is really superb value for money! The performance will be there for sure with such a high engine.
It is clear that users who really want very refined equipment will regret the absence of solid studs with nuts, a hard nykasil, a stud bolt, joints to make the squish properly, real study on channels and transfers, ... But for such a price we could not expect anything better than what AIRSAL did! The finish will certainly surprise you! It is worthy of the greatest BIDALOT, MHR ... See even better!
We recommend with this kit at least : Ø21mm carburetion, reinforced crankshaft, reinforced bearings, adapted exhaust, low engine / high engine alignment, cold spark plug grade B10 (31 in DENSO) see B105 (34 in DENSO),…
The pack contains :
Hardware set
notice
Sticker
Cylinder d.50mm 7 transfers AIRSAL Xtrem
VERTEX piston special anti-detonation treaty ANODIZING TREATMENT
Ø50X1mm segment
Complete seal pack
Cylinder head Ø50mm high compression
Piston pin
2 racing piston clips in C
Studs exhaust
As an option we offer you a stage 1 preparation, this preparation is a modification of the exhaust light by increasing the diagrams and improving the duct, it increases the performance of the cylinder. An improvement in the skirt bottoms is also included in this modification. Allow a little extra time for this preparation!
This high engine is mounted on 50cc motorcycles with gearboxes equipped with the DERBI Euro1 and Euro2 engine:
BULTACO Astro enduro 50cc
BULTACO Lobito supermotard 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)
DERBI 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 ...
