Engineered for extreme structural stiffness, micro-gram weight reduction, and rapid interchangeability across Zurich's aggressive downhill tracks and technical cross-country switchbacks.
Switzerland's riding culture blends grueling Alpine ascents with ultra-technical loam, shale, and granite descents. Off-the-shelf standard crank arms fail under Zurich’s torque demands.
Zurich's flagship trail descending from Uetliberg drops over roots, wet limestone steps, and sharp compression dips. Riders generate instantaneous peak torque exceeding 900 watts immediately out of switchbacks.
Our hollow-forged crankarms provide the lateral torsional rigidity needed to eliminate bottom bracket flex, ensuring crisp chain pickup without rub or frame scuffing.
Long alpine climbs around Bachtel and Hörnli demand relentless pedaling cadence for hours in high gears. Weight savings directly dictate climbing velocity and mechanical efficiency.
By pairing 3D CNC internal weight-relief cavities with precision 32T/34T narrow-wide profiles, our cranksets save up to 140g per assembly while maintaining fatigue thresholds exceeding ISO 4210 standards.
Zurich's winter months expose mountain bike drivetrains to abrasive road brine, snowmelt grit, and constant dampness. Standard bottom bracket interfaces seize up within a single season.
Our T47 and BSA bottom bracket configurations incorporate double-contact labyrinth seals and industrial ceramic ball bearings, guaranteeing zero water ingress and silky smooth cadence.
Strategic supply chain insights for Swiss bike brands, independent bike shops (Veloläden), and distributors adjusting to rising consumer demands and motorization.
Switzerland is leading Europe in e-mountain bike adoption, specifically mid-power SL systems (Bosch Performance SX, Fazua Ride 60, TQ-HPR50). These powertrains place intense dynamic shearing stresses on spider and chainring teeth. Our automated forging facilities now fabricate cold-forged 7075-T6 ISIS-splined and direct-mount crank arms specifically rated for continuous 85Nm torque spikes without deflection.
Modern downhill and trail bike geometry across Swiss ranges demands wider tire clearances (2.4"–2.6") and short chainstays. The industry standard has migrated decisively to a 55mm chainline. Our crank spindles and offset chainrings (0mm, 3mm, and 6mm) are precision calibrated to optimize drivetrain alignment, preventing diagonal friction loss on 12-speed 52T cassette cogs.
High-end Swiss frame builders have almost completely abandoned traditional press-fit shells due to creaking under wet alpine riding conditions. The oversized T47 threaded standard provides both the massive diameter of press-fit and the rock-solid mechanical threading of BSA. We export pre-configured T47-compatible crank spindle kits ready for plug-and-play assembly.
Zurich importers are actively reducing exposure to massive multi-thousand-unit MOQ mandates from dominant conglomerate brands. Harke's production structure enables Swiss distributors to order customized private-label drivetrain components starting from trial quantities of 1 to 50 sets, allowing rapid inventory turnover without tying up millions in liquid capital.
Direct engineering specifications designed for OEM procurement officers and master workshop mechanics in Switzerland.
| Component Line | Material & Process | Spindle / Interface | Chainring Tooth Profiles | Target Swiss Application |
|---|---|---|---|---|
| Pro-Race XC Hollow Core | Forged 7075-T6 CNC Machined | 24mm Cr-Mo or 30mm 7075 Alloy | 32T, 34T, 36T Narrow-Wide | Cross-Country Marathon |
| Enduro Gravity DH Series | Heavy-Duty Cold-Forged 6061/7075 | 30mm DUB Compatible Spindle | 34T, 36T, 38T Direct-Mount | Uetliberg Bike Park / DH |
| E-MTB Mid-Drive Assist | Full CNC Billet Aluminum | ISIS Spline / Bosch Gen4 Brose | 34T, 36T Steel/Alloy Hybrid | Alpine Touring E-Bikes |
| T47 / BSA Bottom Brackets | CNC Anodized Cups + Si3N4 Ceramic | Threaded 68/73mm & 86.5mm Shells | Precision Enduro Bearings | All-Weather Winter Riding |
Headquartered in Shenzhen's precision engineering cluster, Harke (Shenzhen) Technology Co., Ltd. combines tier-one manufacturing capability with streamlined European export logistics.
Our 1,000–3,000 m² Shenzhen factory premises and production capacity are independently verified and certified on-site by international inspection bureaus.
We maintain an industry-leading 97.41% response rate. Swiss buyers receive engineering calculations, CAD drawings, and quotes in under 4 hours.
Eliminate dead stock risks. Source select MTB cranksets, repair stands, and phone mounts with sample trial orders starting from just 1 set.
Private-label laser marking, custom anodizing (10 distinct colorways), retail packaging design, and multilingual Swiss compliance documentation.
Seamless door-to-door fulfillment covering FOB, EXW, DDP, and DDU. We manage Swiss customs, clearance, and freight straight to Zurich warehouses.
Frictionless payments in Swiss Francs (CHF), USD, and EUR via T/T and Western Union, shielding your organization from foreign exchange volatility.
Our senior engineering core brings over a decade of cycling drivetrain R&D experience, ensuring tight CNC tolerances (±0.01mm) on every batch.
From metallurgical spectrometer testing of incoming billet ingots to torque fatigue and surface salt spray audits prior to final packing.
Clear answers to regulatory, logistical, and custom engineering inquiries frequently raised by Swiss commercial partners.
We provide full Delivered Duty Paid (DDP) door-to-door logistics directly to your facility in Zurich, Winterthur, or Dübendorf. We handle export documentation, air or sea customs declarations, and Swiss Federal Tax Administration (ESTV) 8.1% VAT processing. Your shipment arrives cleared with zero unexpected administrative fees.
For in-stock catalog configurations, sample orders dispatch within 48 hours. Custom CNC-machined cranksets featuring laser-etched OEM logos or specific custom anodized pantones require 7 to 12 production days. Express air couriers (DHL/FedEx) deliver directly to Zurich within 3 to 5 business days.
Yes. All Harke mountain bike crankset assemblies, axles, and chainrings are engineered and tested in accordance with ISO 4210-8 safety standards (fatigue testing with 100,000 to 120,000 cycles under dynamic 1,800N loads). Complete third-party metallurgical and stress test certificates are available upon inquiry.
Absolutely. One of Harke's greatest strengths is cross-category consolidation. Swiss buyers can bundle MTB cranksets with our rechargeable 150 PSI pumps, 80kg electric repair stands, and IPX5 taillights under a single master purchase order, dramatically cutting shipping costs and simplifying warehouse logistics.
Connect directly with our senior drivetrain engineering team. Whether you need custom 7075-T6 crankset samples, CAD drawings, or consolidated DDP freight rates to Zurich, we provide certified answers within 4 hours.