Samebike RS-A08 II Fat Tire Mountain Electric Bike
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auto;padding:1.4rem 1.6rem;border:1px solid var(--sb-line);border-left:4px solid var(--sb-good);border-radius:14px;background:#fbfdfb;} .sb-measured h3{font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--sb-good);margin:0 0 .5rem;} .sb-measured p{margin:0;color:var(--sb-ink);} .sb-measured .sb-src{margin-top:.6rem;} .sb-notes{margin:1rem 0 0;padding:1.2rem 1.5rem;border:1px solid var(--sb-line);border-radius:16px;} .sb-notes li{margin:.5rem 0;color:var(--sb-sub);font-size:.95rem;} .sb-colors{margin:0 0 1rem;font-size:.98rem;color:var(--sb-sub);} @media(max-width:800px){.sb-feat,.sb-feat:nth-of-type(even){grid-template-columns:1fr;gap:1.25rem;padding:2rem 0;}.sb-feat:nth-of-type(even) .sb-feat__media{order:0;}.sb-feat__txt h3{font-size:1.6rem;}.sb-ledger,.sb-fit{grid-template-columns:1fr;}} Samebike's most-reviewed US bike, in its second generation: double-crown fork up front, hydraulic shock out back, and 26×4 rubber for everything in between. Quick answerThe Samebike RS-A08 II is the brand's full-suspension fat-tire mountain flagship: a 1000W hub motor (1,500W peak, 80+ N·m) on a 6061 aluminum frame with a 100mm double-crown fork, hydraulic rear shock, 48V 17Ah battery and hydraulic discs at both ends. Black or Gray, $1,399 — Samebike's own price, with free shipping in the lower 48 from Redtail. 1,500WPeak motor power 80+ N·mTorque 816Wh48V 17Ah battery 81 miMax claimed range 79 lbCurb weight Who the RS-A08 II is for Buy it if Trail-and-fire-road riders who want real full suspension — a 100mm double-crown fork and a hydraulic rear shock, not the pogo-stick seatpost that passes for suspension at this price Steep country: Samebike publishes a 40° climb rating, the highest gradient figure it claims for any bike in its US range Bigger riders — a 180 kg (396 lb) payload rating on a 6061 aluminum frame Buyers who want the known quantity: this is the one current model Samebike US has kept selling since 2024, now in its II revision, with 42 owner reviews on the maker's own store Look elsewhere if You need to haul it upstairs daily — 36 kg (79 lb) is manageable on a ramp, honest work on a staircase Your rules require a certified battery: Samebike publishes no UL 2849 or UL 2271 listing for this model You want maximum speed — the RS-A08 II tops at 45 km/h (28 mph), below the M20 family; that's a feature for street riders, a limit for private-land riders You'd rather fold it into a trunk — for that geometry in this power class, look at the RS-A02 Plus SuspensionDouble-crown fork, hydraulic rear The RS-A08 II's defining spec: a 100mm-travel double-crown fork — the stiff, two-clamp architecture borrowed from gravity bikes — with a heavy-duty hydraulic shock behind it. Washboard, roots and curb drops reach the rider as movement, not impact. Powertrain1,500 peak watts with a brake interlock The 1000W-rated hub delivers 80+ N·m and a 40° published climb rating. Both hydraulic levers carry motor cut-off switches, so power dies the moment you brake — the interlock that separates a fast e-bike from an unmanageable one. Battery816Wh, removable, charge anywhere The 48V 17Ah pack slides out of the frame for indoor charging and claims 65 km (40 mi) on throttle alone or up to 130 km (81 mi) with pedal assist in Samebike's lowest-assist test. Recharge is 4–6 hours. FitAdjustable where it matters Seat height runs 35.4–40 in with an 80.7 in overall length — mountain-bike proportions, not moped ones. Shimano's 7-speed cluster plus five assist levels let you set effort anywhere from workout to cruise. The honest ledger Green flags The suspension spec is genuinely unusual under $1,500: a double-crown 100mm fork of the type downhill bikes use, paired with a hydraulic rear shock Samebike rates at 1,000 lb Motor cut-off brake levers: the hydraulic discs kill motor power the instant either lever moves — the single most important safety interlock on a 1,500W bike 6061 aluminum frame where the M20 family runs steel — the main reason this bike weighs 49 lb less than an M20 while carrying the same 396 lb payload rating The most owner-reviewed bike on Samebike's US store: 42 reviews at 98% five-star at our 2026-08-23 pull — their customers' words, on their site, checkable Red flags Samebike's own page FAQ calls the motor "750W" while the spec table, stat strip and product title say 1000W rated / 1,500W peak — a leftover from an earlier generation's copy. We print the spec-table figures and flag the FAQ line The rear shock is described as "air suspension" in one panel and "1,000-pound hydraulic" in another — Samebike's copy, both quoted; the spec table says only "rear suspension" No UL 2849 / UL 2271 certification published for battery or drive system At 28 mph capability with a throttle, it sits at the boundary of most states' Class 3 definitions (which are pedal-assist-only above 20 mph) — check your state's rules before treating it as a street commuter How the RS-A08 II compares All figures are Samebike's own published specs, read from each model's archived product page on 2026-08-23. Spec RS-A08 II CREST STORM M20-III Price $1,399 $1,299 $1,299 $1,499 Peak power 1,500W 1,800W 1,800W 3,000W combined (one Samebike marketing line says 2,600W — see notes) Battery 48V 17Ah (816Wh), removable 48V 20Ah (960Wh), seat-integrated 48V 20Ah (960Wh), LG cells, smart BMS, seat-integrated Dual 48V 18Ah = 48V 36Ah total (1,728Wh), independently switchable Max range (claimed) 130 km (81 mi), claimed 160 km (99 mi), claimed at lowest assist 93 mi / 150 km, claimed under controlled conditions 240 km (149 mi), claimed (one banner says 280 km — see notes) Top speed 45 km/h (28 mph) 50 km/h (31 mph) 50 km/h (31 mph) 50 km/h (31 mph) Brakes Hydraulic dual disc, 180mm rotors, motor cut-off levers Hydraulic disc, 180mm front and rear Hydraulic disc, front and rear Hydraulic disc, front and rear Drivetrain Shimano 7-speed Shimano 8-speed Shimano 8-speed Shimano 7-speed Weight 36 kg (79 lb) 45 kg (99 lb) 45 kg (99 lb) 58 kg (128 lb) Payload 180 kg (396 lb) 150 kg (330 lb) 150 kg (330 lb) 180 kg (396 lb) Source: each model's page on us.samebike.com, archived 2026-08-23. — = not published by Samebike for that model. Full specifications Motor 1000W brushless rear hub Peak power 1,500W Torque 80+ N·m (Samebike's figure) Climb rating 40° (Samebike's figure) Battery 48V 17Ah (816Wh), removable Throttle-only range 65 km (40 mi), claimed Max pedal-assist range 130 km (81 mi), claimed Top speed 45 km/h (28 mph) Brakes Hydraulic dual disc, 180mm rotors, motor cut-off levers Suspension 100mm double-crown front fork + hydraulic rear shock Drivetrain Shimano 7-speed Assist levels 5, plus thumb throttle Display Color LCD Tires 26 × 4.0 in, puncture-resistant Frame 6061 aluminum Weight 36 kg (79 lb) Payload 180 kg (396 lb) Charging time 4–6 hours USB charging port Yes Dimensions 2.05 × 0.67 × 1.16 m (80.7 × 26.4 × 45.7 in) Seat height 35.4–40 in Wheelbase 50.4 in Handlebar width 26.3 in Specifications as published by Samebike at us.samebike.com/products/samebike-rsa08-off-road-electric-bike, archived 2026-08-23. Metric-to-US conversions are ours and marked in parentheses. Found an error? Email [email protected]. How to read this spec sheet Manufacturer spec pages contain marketing, and marketing sometimes disagrees with the spec table an inch below it. Rather than quietly pick numbers, here is every place Samebike's own page disagrees with itself for this model, and which figure we print: Samebike's on-page FAQ quotes a "750W motor" and "60 km pure electric / 74 miles pedal assist" — figures from an earlier RS-A08 generation's copy. The current spec table (1000W/1,500W, 65/130 km) governs; SKUs on the live variants read RS-A08-II. The rear shock is called "air" in one marketing panel and "1,000-pound hydraulic" in another; the spec table commits only to "rear suspension". We quote both descriptions rather than pick one. This page replaces Redtail's legacy RS-A08 listing at the same URL: the old listing predated the II revision and had no buyable variants. Price was already matched at $1,399; the II content, Gray colorway and live availability are what changed on 2026-08-23. What we counted We pulled Samebike US's entire live catalog on 2026-08-23 and counted what was actually buyable: 29 of 32 bike variants across 10 models. The three unbuyable variants are all one model's colorways (M20: Black, LightSteelBlue, DarkGreen); every other bike was buyable in every published colorway on the pull date. This listing mirrors that feed — we only sell configurations Samebike can actually supply, and we re-sync price and availability against their store rather than guessing. Redtail original analysis, counted from Samebike US's public storefront feed on 2026-08-23 (one shipping-surcharge SKU excluded). Availability moves; email [email protected] for a combination not shown here. Warranty Component Coverage Frame 3 years from receipt by the original owner (replacement frame only; changeover labor not included; corrosion, paint fade, scratches, impact damage and non-reversible modification excluded) Battery 1 year, prorated — repaired or replaced free within the first year; after that, a months-of-service credit toward a new battery Motor and other components 1 year Money-back window 14 days, undamaged and unused product Shipping damage Must be claimed within 7 days of delivery, with photos or video What it covers Manufacturing defects under normal use for the original owner, on the frame, battery, motor and the components above. Second-hand bikes stay covered only inside the original first year and only with the first owner's name and order number. What you must do Proof of purchase from Redtail (your order confirmation is enough) Photos or video of the fault with any claim Report shipping damage within 7 days of receipt — sooner is better Not covered Accident, abuse, misuse, stunt riding, racing or other use outside the intended purpose Corrosion, paint fade, scratches and impact damage Ordinary wear items Free promotional accessories bundled with a bike Labor charges for changeover or installation Stolen bikes Shipping-damage claims made more than 7 days after delivery Samebike Limited Warranty issued by Samebike, as published on its warranty policy page. Send photos or video of the issue with your order number and we take it from there — Redtail files and manages the claim with Samebike on your behalf. Shipping, returns & support Shipping Free shipping on every electric bike within the contiguous United States (lower 48). Orders are prepared and dispatched within 1–3 business days. Most e-bikes arrive within 5–10 business days after dispatch, depending on location. Ships via trusted parcel and freight carriers — UPS, FedEx, and LTL freight for larger items — with tracking emailed at dispatch. On delivery Inspect your shipment at delivery. Damage, defects, or incorrect items must be reported with photos within 48 hours; claims submitted after this window are not accepted. Bikes with power, charging, or component issues are covered under the manufacturer warranty; Redtail coordinates repair or replacement remotely at no cost to the customer. Returns Change-of-mind returns accepted only on unopened, factory-sealed items requested within 72 hours (3 days) of delivery, with a 15% restocking fee plus return shipping. Once a box is opened or a bike is ridden, it is no longer eligible. Order cancellations carry a 3% transaction fee, because card-processing fees are non-recoverable. Alaska, Hawaii, U.S. territories, P.O. boxes, and remote areas may incur extra charges or be excluded — contact us before ordering. Full terms: Redtail Shipping Policy · Redtail Refund & Return Policy. Samebike publishes its own shipping and return terms, which apply to orders placed directly with Samebike, not to orders placed here. Frequently asked questions What changed from the original RS-A08 to the RS-A08 II?Samebike's current variants carry RS-A08-II SKUs, and the page's stat strip moved to 1000W rated / 1,500W peak with the 100mm double-crown fork and hydraulic rear shock headline specs. Some copy from the earlier generation still lingers on Samebike's own page (a "750W" FAQ line among it) — our spec table above follows the current generation's published figures. Can it really climb a 40-degree slope?40° is Samebike's own published climb rating and we report it as their claim, not our measurement. For context, it's the steepest gradient figure Samebike publishes on any current US model — and unpublished variables like rider weight, surface and battery charge decide any real climb. Treat it as "geared for very steep terrain," not as a protractor promise. How does it ride compared to the CREST and STORM?The RS-A08 II is the suspension pick of the three. CREST and STORM carry bigger 960Wh batteries and 8-speed drivetrains on steel frames with 1,800W peaks; the RS-A08 II answers with the aluminum frame, the double-crown fork, the hydraulic rear shock, a higher payload rating and a published climb figure. Big miles on smoother ground favor those two; rough ground favors this one. The comparison table below puts the numbers side by side. What does 79 lb mean for daily life?It's mid-pack for full-suspension fat e-bikes: 20 lb lighter than the CREST/STORM's published 99 lb and far under the M20 family's 128 lb, but still a bike you roll rather than carry. A hitch rack rated for e-bikes handles it; most trunk racks won't. What's the real-world range?Samebike claims 40 mi on pure throttle and up to 81 mi with pedal assist — lowest-assist-level figures. Its own on-page FAQ, written for the earlier generation, quoted 74 miles of assisted range, which is at least consistent in scale. Ride fast with heavy throttle and expect a fraction of the headline; the removable 816Wh pack recharges in 4–6 hours. Who handles the warranty on a bike I buy from Redtail?We do. Samebike's published warranty runs 3 years on the frame and 1 year on battery (prorated), motor and components; Redtail files and manages the claim with Samebike on your behalf. Photograph any shipping damage within 48 hours of delivery and email [email protected] — their policy gives shipping-damage claims only a 7-day window, so speed matters. Keep looking Every Samebike at Redtail · Compare the CREST · Compare the STORM · Compare the M20-III · E-bike laws in your state · Shop electric bikes by type Primary sources Samebike US product page: Samebike RS-A08 II Fat Tire Mountain Electric Bike us.samebike.com/products/samebike-rsa08-off-road-electric-bike. Retrieved 2026-08-23. Samebike Warranty Policy us.samebike.com/pages/warranty-policy. Retrieved 2026-08-23. Samebike Shipping Policy us.samebike.com/policies/shipping-policy. Retrieved 2026-08-23. Samebike Return & Refund Policy us.samebike.com/pages/return-refund-policy. Retrieved 2026-08-23. Redtail Shipping Policy. Retrieved 2026-08-23. Redtail Refund & Return Policy. Retrieved 2026-08-23. Redtail's state-by-state e-bike law guide. Retrieved 2026-08-23. Specifications and prices are Samebike's own, reproduced as published from the archived copy of its US product page, with contradictions in its copy flagged rather than resolved silently. Warranty terms are Samebike's; shipping and return terms on this page are Redtail's. Manufacturer sources are cited by name and address rather than linked, because every link on this page should keep you here. Want to see any source we used? Email [email protected] and we'll send it. How we verified this page. Every specification above was read from an archived copy of Samebike's own US product page (us.samebike.com/products/samebike-rsa08-off-road-electric-bike), retrieved 2026-08-23 with the price cross-checked against two independent Samebike endpoints the same day. Figures are the manufacturer's ratings, not our test results; where Samebike's page disagrees with itself, the "How to read this spec sheet" section names each conflict and the figure we chose. Prices are USD, matched to Samebike's own US store, current at the date shown. Corrections: [email protected].
