853 PI MTB
rennstahl
Crosscountry
853 PI MTB is a steel cross-country mountain bike (2024), by Rennstahl. It suits riders who prioritize comfort and confidence on longer off-road rides, leaning toward a comfort-leaning position, while being best for smoother trails and efficient rolling. Its strongest points in the MatchBikes metrics are strong climbing friendliness for sustained uphill riding, good fit flexibility for dialing in rider position, and balanced, versatile speed for everyday riding. The main limitation versus more focused builds is a firmer ride feel than comfort-first options and a value score that depends more on priorities than pure price efficiency. Compare this bike with other cross-country bikes on MatchBikes.com.
Rating

Score Summary
Performance
Built for speed and efficiency
Fit
Dialed-in Fit & Comfort
Value
Specifications
General
Frame
Drivetrain
Wheels
Brakes
Cockpit
Seat
Geometry
| Measurement | SM | MD | LG | XL | XXL |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.735 mm | 1.686 mm | 1.645 mm | 1.603 mm | 1.571 mm |
| Bottom Bracket Height | 280 mm | 280 mm | 280 mm | 280 mm | 280 mm |
| Front Center | 645 mm | 671 mm | 689 mm | 710 mm | 725 mm |
| Rake | 48 mm | 54 mm | 52 mm | 53 mm | 49 mm |
| Trail | 78 mm | 72 mm | 74 mm | 73 mm | 77 mm |
| Stack | 656 mm | 666 mm | 676 mm | 686 mm | 696 mm |
| Reach | 378 mm | 395 mm | 411 mm | 428 mm | 443 mm |
| Top Tube Length | 585 mm | 603 mm | 622 mm | 642 mm | 655 mm |
| Seat Tube Angle | 72.5 ° | 72.5 ° | 72.5 ° | 72.5 ° | 72.5 ° |
| Seat Tube Length | 405 mm | 445 mm | 483 mm | 533 mm | 555 mm |
| Head Tube Angle | 70 ° | 70 ° | 70 ° | 70 ° | 70 ° |
| Head Tube Length | 125 mm | 125 mm | 135 mm | 145 mm | 170 mm |
| Chainstay Length | 455 mm | 450 mm | 450 mm | 450 mm | 450 mm |
| Wheelbase | 1089 mm | 1111 mm | 1129 mm | 1150 mm | 1165 mm |
| Bottom Bracket Drop | 75 mm | 75 mm | 75 mm | 75 mm | 75 mm |
| Wheels | 27" | 27" | 27" | 27" | 27" |
| Rider Min Height | 165 cm | 168 cm | 177 cm | 184 cm | 195 cm |
| Rider Max Height | 171 cm | 180 cm | 187 cm | 201 cm | 205 cm |



























































