Reference: 297257
Competition motor spring, adjustable tensioner DOPPLER ER1 for MBK 51 / MOTOBECANE AV10
The only true adjustable racing motor spring still available for MBK 51!
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This pair of mainspring is mounted on AV7 and AV10 engine! When an engine is properly prepared or equipped, it is important to use the right power regime! Originally, the variator starts to close very early, from 5500/6000 revolutions (when the motor is still far from its power range, the variator starts to close! As if with an automobile you were to shift your gear very early down It is therefore important to put a harder spring, which will cause your variator to start closing around 3000 revolutions later! You will therefore use the maximum power speed, as if on a car you were shifting your gear than a times the rev counter in the red in order to have power.This little spring will therefore be excellent on an original configuration or original type.
Reference: 297257
The only true adjustable racing motor spring still available for MBK 51!
Reference: 210827
A pulley designed for the most equipped engines which allows a gain in weight and a nice style.
Reference: 512222
Engine spring retaining part taken from the chassis
Reference: NN2171100000
Genuine original high quality chainring / pulley!
Reference: 501401
Original type mounting bracket for MBK 51, AV10 engine.
Reference: 4277
A piece identical to the original one of very good quality at a much lower price.
Reference: 800
Ideal for restarting, mounts on pulley ER2 DOPPLER all models also on the original clutch pulleys of SPX / RCX / CLIP / MVX.
Reference: 143216
Ideal in case of wear of your old plate for repair and refurbishment at a lower cost.
Reference: 4272
The Ø16mm spare crank axle with 28 teeth for MBK 51, MOTOBECANE ....
Reference: S715386
Ideal for winding without a game with a lower-cost quality product.
Reference: 4278
Ideal in case of breakage or wear for a change of good quality at low prices.
Reference: 4269
Ideal for reassembly without play at a lower cost.
Reference: 510120
A piece that will give you a beautiful sporty and efficient TUNING aspect.
Reference: 4266
A high-end socket, ultra reinforced and all at affordable price.
Reference: 8814
Excellent for not playing in your pulley / plate. Warning, only one room available !!!
Reference: 4253
A low cost chainring will be perfect if your old chainring wears out for lower cost repairs.