Overview
The 2026 Santa Cruz Heckler SL is Santa Cruz’s lightweight electric mountain bike, designed to ride and feel as close to an analog trail bike as possible while adding the benefit of pedal assist. Built around the Fazua Ride 60 motor system producing 60 Nm of torque and up to 450W of peak power, the Heckler SL weighs significantly less than full-power eMTBs — around 43 lbs in the GX AXS build. With 150mm of rear travel and a 160mm fork, it slots into the all-mountain category and uses Santa Cruz’s proven lower-link VPP suspension design with mixed 29” front / 27.5” rear wheels.
New to bike geometry? Our complete guide to mountain bike geometry explains every measurement and what it means for your riding. You can also learn how to read a geometry chart to compare this bike against other models.
Geometry is adjustable via a two-position flip chip in the lower link shock mount, offering High and Low settings. In the High position, the head angle sits at 64.3° with a 344mm BB height, while the Low position slackens to 64.0° with a 340.7mm BB. Reach ranges from 435mm (SM) to 525mm (XXL) in the High setting. Chainstays are size-specific on the larger sizes — 443mm on SM through LG, 446mm on XL, and 450mm on XXL — maintaining balanced handling as the bike scales up. The 480Wh integrated battery (on GX AXS builds) provides solid range for big days in the mountains.
Geometry Diagram
Geometry Table
| Measurement | SM | MD | LG | XL | XXL |
|---|---|---|---|---|---|
| Head Tube Angle (high) | 64.3° | 64.3° | 64.3° | 64.3° | 64.3° |
| Head Tube Angle (low) | 64.0° | 64.0° | 64.0° | 64.0° | 64.0° |
| Seat Tube Angle (high) | 76.8° | 77.1° | 77.5° | 77.7° | 77.8° |
| Seat Tube Angle (low) | 76.6° | 76.9° | 77.2° | 77.5° | 77.5° |
| Head Tube Length | 100mm | 110mm | 120mm | 140mm | 155mm |
| Seat Tube Length | 380mm | 405mm | 430mm | 460mm | 500mm |
| Top Tube Length (high) | 569mm | 603mm | 621mm | 642mm | 669mm |
| Top Tube Length (low) | 580mm | 603mm | 622mm | 643mm | 670mm |
| Reach (high) | 435mm | 460mm | 480mm | 500mm | 525mm |
| Reach (low) | 432mm | 457mm | 478mm | 497mm | 523mm |
| Stack (high) | 615mm | 624mm | 633mm | 651mm | 665mm |
| Stack (low) | 617mm | 626mm | 635mm | 653mm | 667mm |
| Wheelbase (high) | 1209mm | 1238mm | 1263mm | 1294mm | 1330mm |
| Wheelbase (low) | 1210mm | 1239mm | 1263mm | 1295mm | 1331mm |
| Chainstay Length (high) | 443mm | 443mm | 443mm | 446mm | 450mm |
| Chainstay Length (low) | 444mm | 444mm | 444mm | 447mm | 451mm |
| BB Height (high) | 344mm | 344mm | 344mm | 344mm | 344mm |
| BB Height (low) | 341mm | 341mm | 341mm | 341mm | 341mm |
| Standover (high) | 720mm | 733mm | 733mm | 732mm | 741mm |
| Standover (low) | 716mm | 729mm | 729mm | 732mm | 739mm |
| Fork Offset | 44mm | 44mm | 44mm | 44mm | 44mm |
Geometry Analysis
The Heckler SL’s geometry is virtually identical to a modern analog trail bike, which is the entire point. The 64.3° head angle (High) provides confident descending without feeling sluggish on climbs, while the steep, size-specific seat tube angles (76.8°–77.8°) keep the rider well-positioned for efficient pedaling. Size-specific chainstays — 443mm on SM–LG, scaling to 450mm on XXL — are a hallmark of Santa Cruz’s proportional geometry approach. The consistent 344mm BB height across all sizes provides a low center of gravity and stability without sacrificing pedal clearance. The flip chip adjustment is subtle (0.3° head angle, ~3mm BB height) but gives riders meaningful tuning for different terrain preferences.
Ride Characteristics
The Heckler SL rides remarkably like a non-motorized trail bike. The Fazua Ride 60 motor provides smooth, natural-feeling assistance that augments the rider’s input rather than overpowering it. In Breeze mode, the assistance is barely perceptible but meaningfully reduces fatigue on long climbs. Rocket mode delivers a noticeable boost for steep technical climbing. The VPP suspension provides the active, supportive pedaling platform Santa Cruz is known for, with excellent small-bump sensitivity and progressive ramp-up through the stroke. On descents, the 150mm of rear travel and 160mm fork handle rough terrain with composure, and the mixed wheel setup combines the rollover capability of a 29er front with the agility and acceleration of a 27.5” rear. At around 43 lbs, the Heckler SL can be ridden aggressively and thrown around in a way that heavier full-power eMTBs simply cannot match.
Key Specs
Frame: Carbon C. Wheel Size: 29” front / 27.5” rear (MX). Travel: 160mm front / 150mm rear. Motor: Fazua Ride 60 (60 Nm, 450W peak). Battery: 480 Wh (GX AXS). Sizes: SM, MD, LG, XL, XXL. Suspension: Lower-link VPP. Drivetrain: SRAM Eagle Transmission 12-speed. Brakes: SRAM Maven Bronze, 200mm rotors. Fork: FOX 36 Performance Elite, GRIP X2. Shock: FOX Float X Performance Elite. Flip Chip: 2-position (High/Low).
What’s New vs Previous Generation
The Heckler SL was introduced in 2023 as Santa Cruz’s lightweight eMTB alternative to the full-power Bullit. For 2026, the platform carries forward with the same frame geometry and Fazua Ride 60 motor integration. Component updates include refreshed SRAM Eagle Transmission drivetrains across the lineup. The Carbon C frame with lower-link VPP suspension remains unchanged — Santa Cruz has refined the Heckler SL’s component spec rather than altering the proven chassis.
Who Should Consider This Bike
The Heckler SL is ideal for riders who love trail riding and want a little extra help on the climbs without sacrificing the feel and handling of a traditional mountain bike. If you find yourself cutting rides short due to fitness or wanting to explore longer loops, the Heckler SL extends your range while preserving the experience of riding a real trail bike. It also suits riders who want an eMTB they can load on a roof rack without a crane. If you need maximum power for steep, sustained climbs or shuttle-replacement capability, the full-power Bullit is the better choice.
Comparable Models
The Heckler SL competes directly with the Specialized Turbo Levo SL 2, Trek Fuel+ EX, and Pivot Shuttle SL. All four bikes use lightweight motor systems (Fazua, Specialized SL 1.2, TQ HPR60) to deliver a natural ride feel at significantly lower weight than full-power eMTBs. The Levo SL 2 is the most direct competitor with similar travel and weight. The Trek Fuel+ EX offers slightly more travel. The Pivot Shuttle SL is another premium lightweight option. Among these, the Heckler SL stands out for its VPP suspension kinematics and Santa Cruz’s proportional geometry approach.
Related Geometry
More Santa Cruz geometry: Santa Cruz 5010 2025 Geometry, Santa Cruz 5010 27.5 2020 Geometry, Santa Cruz Blur 2026 Geometry, Santa Cruz Blur 29 2020 Geometry, Santa Cruz Bronson 2026 Geometry.
Compare emtb bikes: 2023 Giant Reign E+ Geometry, 2023 Giant Stance E+ Geometry, 2023 Giant Trance E+ Geometry.
Frequently Asked Questions
What motor does the Santa Cruz Heckler SL use?
The Heckler SL uses the Fazua Ride 60 motor, which produces 60 Nm of torque and up to 450W of peak power. It’s a lightweight system designed to provide natural-feeling pedal assistance while keeping the bike’s weight under 44 lbs. The motor supports Breeze, River, Rocket, and Walk Assist modes, plus a brief Boost function for extra power when needed.
How much does the Santa Cruz Heckler SL weigh?
The Heckler SL GX AXS build weighs approximately 43 lbs 13 oz (19.9 kg). This is significantly lighter than full-power eMTBs like the Bullit (around 49 lbs) and makes the Heckler SL feel much more like a traditional mountain bike when riding.
What is the battery capacity of the Heckler SL?
The GX AXS build comes with a 480 Wh integrated battery, while other builds use a 430 Wh battery. Range varies depending on terrain, rider weight, and assist level, but riders can typically expect 2–4 hours of assisted riding on a full charge.
Does the Heckler SL have adjustable geometry?
Yes. The Heckler SL features a two-position flip chip in the lower link shock mount. The High position provides a 64.3° head angle and 344mm BB height, while the Low position slackens to 64.0° with a 341mm BB height. This allows riders to tune the bike for different terrain preferences.
What is the difference between the Heckler SL and the Bullit?
The Heckler SL is Santa Cruz’s lightweight eMTB using the Fazua Ride 60 motor (60 Nm, ~44 lbs), while the Bullit is the full-power option with a Bosch Performance CX motor (85 Nm, ~49 lbs) and 600 Wh battery. The Heckler SL has 150/160mm of travel and rides more like an analog bike, while the Bullit has 170/170mm and is built for more aggressive terrain.