The legendary full cheek crankshaft suitable for mopeds / mopeds with Sachs 50/3 engines (not to be confused with 503 engines), which have L17 crankshaft bearings.
High-quality, precision-fit crankshaft weighing 1062 grams, which has proven itself in a wide variety of load tests.
This crankshaft was designed for use in engines with a large increase in performance.
All balancing holes in the cheeks have been sealed with aluminum inserts for maximum pre-compression.
The solid connecting rod is fitted with a more stable 16 mm connecting rod pin, which is hollow on the inside for better balancing.
Dimension:
- Total length of clutch-side cheek pin: 43 mm
- Total length of clutch-side cheek pin: 69.9 mm
- Ø 1st shoulder (clutch-side): 17 mm
- Ø 2nd shoulder (clutch side): 12 mm
- Thread on coupling side: MF10x1 mm
- Ø Heel (coupling side): 17 mm
- Thread on the Zünd side: MF10x1 mm
- Ø crank webs: 85 mm
- Width of crank webs: 30.1 mm
- Ø connecting rod eye top: 15 mm
- Ø connecting rod pin bottom: 16 mm
- Conrod length: 85 mm
- Stroke: 42 mm
- Weight (incl. Connecting rod): 1062 grams
The needle bearing (12/15 x14.7 mm) is included in the scope of delivery.
You can find the matching bearings and oil seals in the accessories section.
Installation tip:The transition between the crank webs and cheek pins is provided with a slight radius for reinforcement. To ensure clean spacing, the first spacer washer should be provided with a slight chamfer on the left and right. This then lies neatly over the chamfer and is therefore also perfectly centered. The other spacers can be used as normal.
You can find spacers and the matching bearings in the accessories section.
Quality product from the Portuguese manufacturer Rito.
| Manufacturer | Rito |
| Material | Steel, Aluminum |
| Area of application | Tuning, Racing |
| Cheek type | Full cheeks |
| Crankshaft stroke | 42 mm |
| Connecting rod length center-center | 85 mm |
| Total length of crankpin on clutch side | 43 mm |
| Total length crankpin ignition side | 69.9 mm |
| Ø crank webs | 85 mm |
| Ø Connecting rod eye | 15 mm |
| Thread type | MF10x1 (fine pitch thread) |
| Weight | 1062 g |
| Ø piston pin (B) | 12 mm |
| Dimension needle bearing | 12 / 15 x 14.7 mm (axe 12) |
| Wide crank webs | 30.1 mm |
| Length 1st paragraph | 17 mm |
| Length 2nd paragraph | 12 mm |
| Sachs | 50/3 50/4 - MLFB (2.6 PS) , LKH (4.5 PS) |
Ratings
Accessories & related products
swiing® ingenious puller L17 / BO15 / E15 shoulder bearing
Width across flats trigger: 8 mm · Width across flats trigger: 19 mm · Span: 24 mm · Manufacturer: swiing® ingenious parts · Clamping depth: 10 mm · Peel-off tray: BO15 · Peel-off tray: E15 · Peel-off tray: L17 · Diameter: 24 mm · Diameter: 40.3 mm · Surface: galvanized (blue) · Total length: 120 mm · Thread type: M6x1 (standard thread) · Thread type: M8x1.25 (standard thread) · Number of components: 1 pcs · Area of application: (Dis)assembly tool
51,70 EUR
Shaft seal set 3 & 4-speed kickstarter | Sachs
Ø inside: 10 mm · Ø inside: 13.8 mm · Ø inside: 14.96 mm · Ø inside: 15 mm · Ø inside: 17 mm · Ø outside: 16 mm · Ø outside: 19 mm · Ø outside: 24 mm · Ø outside: 30 mm · Ø outside: 31.5 mm · Width: 2.5 mm · Width: 3.5 mm · Width: 4 mm · Width: 4.5 mm · Width: 7 mm
38,70 EUR
swiing® ingenious crankshaft "High End" | Sachs 503 2AL, 2BL
Manufacturer: swiing® ingenious parts · Material: Aluminum · Material: Steel · Cheek type: Full cheeks · Crankshaft stroke: 42 mm · Ø piston pin (B): 12 mm · Connecting rod length center-center: 85 mm · Number of gears: 2 pcs · Total length of crankpin on clutch side: 43.5 mm · Total length crankpin ignition side: 63.4 mm · Ø crank webs: 85 mm · Ø Connecting rod eye: 15 mm · Thread length: 8 mm · Thread length: 11 mm · Thread type: MF10x1 (fine pitch thread) · Ø Bearing seat (clutch side): 15 mm · Ø Bearing seat (ignition side): 15 mm · Dimension needle bearing: 12 / 15 x 14.2 mm (axe 12) · Wide crank webs: 30.1 mm · Area of application: High End · Area of application: Racing · Area of application: Tuning · Length 1st paragraph: 21 mm · Length 2nd paragraph: 13 mm · Ø 1st step (on the coupling side): 15 mm · Ø 2nd shoulder (on the clutch side): 12 mm · Length of shoulder (ignition side): 35 mm
217,60 EUR
Not in stock
Hot 
swiing® ingenious crankshaft "High End" | Sachs 50/2, 50/3
Manufacturer: swiing® ingenious parts · Cheek type: Full cheeks · Weight: 1038 g · Crankshaft stroke: 42 mm · Ø piston pin (B): 12 mm · Connecting rod length center-center: 85 mm · Total length of crankpin on clutch side: 40.7 mm · Total length crankpin ignition side: 63.4 mm · Ø crank webs: 85 mm · Ø Connecting rod eye: 15 mm · Thread type: MF10x1 (fine pitch thread) · Ø Bearing seat (clutch side): 15 mm · Ø Bearing seat (ignition side): 15 mm · Dimension needle bearing: 12 / 15 x 14.2 mm (axe 12) · Wide crank webs: 30.1 mm · Area of application: High End
217,60 EUR
Not in stock
Explore categories from Engine block
Moped fans also bought
Hot
BERU spark plug connector / 1 kΩ interference suppressed
Manufacturer: BERU · Material: Sheet metal (steel) · Color: silver · Spark plug socket: M4 · Cable available: No · Suppressed: Yes · Resistance: 1000 Ω · Subcategory: Spark plug connector · Ø cable: 5 mm · Ø cable: 7 mm · Pony OEM number: A2099 · Sachs OEM no.: 0265 100 00
10,40 EUR
NSK L17 shoulder ball bearing
Bearing type: Shoulder bearing · Stock number: L17 · Inner ring width: 10 mm · Manufacturer: NSK · Ball bearing closed: No · Bearing clearance: CN (standard) · Bearing cage: Brass cage ball-guided · Material: Brass · Material: Steel · Ø inside: 17 mm · Ø outside: 40 mm · Width: 10 mm · Area of application: Standard
22,90 EUR
Gasket set with shaft seals diaphragm version | Sachs 50/2
Ø outlet inside: 28 mm · Number of components: 16 pcs · Hole spacing inlet: 31 mm · Hole spacing inlet: 67 - 31 mm · Hole pattern [mm]: 60 x 40 · Area of application: Standard · Pony OEM number: A2548 · Sachs OEM no.: 0286 125 021
46,90 EUR
Not in stock
Shaft seal set 3 & 4-speed kickstarter | Sachs
Ø inside: 10 mm · Ø inside: 13.8 mm · Ø inside: 14.96 mm · Ø inside: 15 mm · Ø inside: 17 mm · Ø outside: 16 mm · Ø outside: 19 mm · Ø outside: 24 mm · Ø outside: 30 mm · Ø outside: 31.5 mm · Width: 2.5 mm · Width: 3.5 mm · Width: 4 mm · Width: 4.5 mm · Width: 7 mm
38,70 EUR
Meteor Racing piston 38 mm | Sachs 50/2 & 503
Manufacturer: Meteor Racing · Surface: molybdenum-coated · Ø outside piston (A): 37.95 mm · Ø piston pin (B): 12 mm · Compression height (C): 28 mm · Curvature (D): 3 mm · Total piston height (E): 53 mm · Number of piston rings (F): 2 pcs · Nominal diameter: 38 mm · Piston ring mold: Rectangular ring · Piston ring impact: Flank safety device (FS) · Piston ring height: 2 mm · Thick piston ring: 1.6 mm · Weight piston kit: 79 g
76,40 EUR
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
