Reference: 509336
DOPPLER motor spring half nut for PEUGEOT 103 and MBK 51
Spare half nut for DOPPLER motor spring.
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Attention, this spring does not fit Peugeot 103 SPX, CLIP, RC X and vogue, it only fits Peugeot 103 chrono, sp, mv, mvl, lm...
Last piece available!!
When an engine is minimally prepared or equipped, it is important to use the correct range of engine speeds to obtain the maximum power! Originally, the drive starts to close very early, from 5500-6000 rpm (when the motor is still far from its interesting power range) while it should close earlier if you want to adapt your variation your configuration more powerful than the origin).
To imagine the point with a car for example, if you change your gears very early around 2000 rpm, you will not have enough engine inertia and it will not be in its optimal power range, you have to aim for high revs to get the most out of your engine!
It is therefore important to put a harder spring, which will cause your variator to start closing about 3000 rpm later! You will therefore exploit the maximum power regime.
This small spring will therefore be excellent for a small configuration like:
- Jar
- 50cc kit
- Ø15mm carburettor …
Mounts on:
Peugeot 103 sp, mv, mvl, lm, chrono...
Reference: 509336
Spare half nut for DOPPLER motor spring.
Reference: 506684
Ideal for the repair of your PEUGEOT 103.
Reference: 520841
Original type mainspring for PEUGEOT 103 MVL and VOGUE from 1995.
Reference: 495897
The only true competition adjustable spring still available on the market for our PEUGEOT 103 MVL / VOGUE
Reference: 503210
Motor spring only, ideal for making a "homemade" mainspring or for repairing its DOPPLER spring (or adaptation to another brand).
Reference: 1994
Hard chrome engine spring for PEUGEOT 103 SP and other models.
Reference: 297246
The only true adjustable competition spring still available on the market for our PEUGEOT 103!
Reference: 512330
Replacement screws for your PEUGEOT 103.
Reference: PM.202.015
Very good quality POLINI adjustable motor spring for 103.
Reference: 297231
A compulsory part for well-equipped machines for optimum tuning of your engine.
Reference: 512329
Spare part at a lower price for your 103!
Reference: 9190
Essential for the proper functioning of your Peugeot 103 engine.
Reference: 510119
Spare nut for your PEUGEOT 103.
Reference: 501442
Motor spring only, ideal for making a "homemade" mainspring or for repairing its DOPPLER spring (or adaptation to another brand).
Reference: 501443
Motor spring only, ideal for making a "homemade" mainspring or for repairing its DOPPLER spring (or adaptation to another brand).